Answer:
meteorites are made of the original material from which Earth formed
Explanation:
Meteorite is a fragment that passes through the earth's atmosphere and strikes the earth.
It is a metallic or stony body which is able to enter the earth.
Meteorites are widely believed to have formed with the earth when the solar system and other planets formed. They contain records of the earth's original composition. This is the main reason why they are suitable for radioactive dating. Example is the Stony Antarctica meteorites. Some of these meteorites have preserved their original composition.
Meteorites can be classified as stony, iron and stony-iron.
Some special set of meteorites contains lumps of materials that are thought to have formed first. These lumps are called chondrules. Meteorites with chondrules are called chondrites. These chondrules are rich in radioactive minerals and are very suitable for dating the earth.
Some meteorites also contain some black carbon matter that has been analysed to be amino acid. This has been very useful in understanding how life formed on earth. It provides an exotic origin of life on earth. These types of meteorites are called carbonaceous meteorites.
A good meteorite for dating would be one that is still very intact and has not weathered. Weathering affects the effectiveness of using earth materials for dating.
Meteorites provide evidence of Earth's interior composition because they are made of materials from which Earth originally formed, offering insights into the solar system's history and Earth's early building blocks.
Explanation:Scientists use meteorites that hit Earth to provide evidence of the composition of Earth’s interior because they hypothesize that meteorites are made of the original material from which Earth formed. Meteorites offer a glimpse into the early history of the solar system and are composed of primitive materials that have not been altered by heat or pressure since their formation. These celestial objects are believed to be remnants from the solar system's formation process, providing crucial information about the materials that constituted early Earth before it underwent differentiation and chemical processing. The study of meteorites helps scientists to understand the building blocks of Earth by offering a comparison with Earth’s interior composition, particularly the mantle and core.
in your own words, explain how a person may taste the bitterness of PTC by using the following vocabulary words in your explanation, trait, gene, genotype, phenotype, and alleles. in this explanation you can treat PTC taste sensitivity as a single gene trait.
PTC gene has two main alleles; one that codes for tasting and the other non-tasting. The allele for tasting determines a trait of tongue papillae that can bind the PTC molecules. Non-tasting allele forms papillae that are unable to bind PTC effectively. Therefore, the combination of these alleles in the genotype of a person determines their phenotype – PTC sensitivity.
Answer:
PTC stands for phenylthiocarbamide.
Explanation:
The taste bud of the human tongue is under the control of the PTC genes. a gene pair has two alleles that might be dominant or recessive depending on the requirement.
The human tongue has 4 taste receptors which are responsible for the different types of tastes in the tongue.
The one alleles of the gene pair are responsible for the formation of taste buds, while the other alleles are responsible for the formation of the unfunctional taste buds.
Therefore, the arrangement of these alleles is responsible for the PTC sensitivity.
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Which acid is the strongest?
pH = 0.5
pH = 2.0
pH = 3.5
pH = 5
Answer:
correct is C
Explanation:
Answer:
ph=5 c is your answer
Explanation:
Every day the moon rises nearly an hour later than it did the previous day. what is the reason for this ?
Answer:
The Moon is continually moving on ahead in its orbit while the Earth rotates. ... Because the Moon has moved 13 degrees or so since its last moonrise, it's going to take another hour or so for the Earth to catch back up to the Moon's new location, delaying the Moon's rising above your horizons by ~50 minutes each day.
- Forbeshttps://www.forbes.com › astroquizzical-moon-rise-time
Answer:
I think its D on USAtestprep
Explanation:
For current to flow the circuit must be _____
Answer:
a complete circuit
Explanation:
For current to flow, the circuit must be complete. A complete circuit ensures a continuous path for the charge to move without interruption, allowing the current to travel through the circuit effectively.
For current to flow, the circuit must be complete. A complete circuit allows charge to move continuously without interruption. An incomplete circuit, often referred to as an open circuit, results in charge build-up at a dead end that repels incoming charge, causing the current to stop flowing. In contrast, a closed circuit provides a continuous path for current, maintaining a steady flow of charge. This is essential for the functioning of any electrical device or system.
An isotope undergoes radioactive decay. The new isotope that forms has an atomic number that is 2 less than the original isotope’s. Which kind of decay has occurred, and how do you know? alpha decay because alpha particles have a large mass beta decay because beta particles can have negative charge alpha decay because alpha particles have two protons and two neutrons gamma decay because gamma rays are photons
Answer:
alpha decay because alpha particles have two protons and two neutrons
Explanation:
An alpha particle has a nucleus which is made up of 2 protons and 2 neutrons. It is actually a Helium cation.
A nuclear reaction involves the nucleus and the elementary particles contained within them.
If an isotope undergoes radioactive decay and the new isotope that forms has an atomic number that is 2 less than the original isotope,it shows an alpha decay has occurred.
The atomic number is the number of protons and it is the same as the number electrons for a neutral atom.
In this isotope, the reaction must have involved loss of two protons from the nucleus. The atomic number comes two less than that original one.
The mass number i.e number of proton + neutron is 4. Therefore, the mass number of the isotope would also decrease by 4.
This is to obey the law of conservation by mass.
Answer:
The answer is C.
Explanation:
Choose all the answers that apply.
Which of the following are general characteristics of animals?
A) mobility
B) nervous systems
C) cell walls
D) specialized tissue
E) dorsal cords
F) heterotrophic
_______________
According to comparative morphology, _____.
A) all organisms have similar development
B) the more closely related two species, the more analogous structures they will share
C) homologous structures are inherited from a common ancestor
D) organisms which have vestigial features are related to one another
_______________
Which of the following statements is true?
A) Genetic drift favors organisms which are well-adapted to the environment.
B) If a species is well-adapted the environment, they cannot become extinct.
C) The introduction of an invasive species can help protect endangered organisms.
D) Species with low genetic diversity are at a higher risk for extinction than species with high genetic diversity.
_______________
How are butterflies and frogs similar?
A) They both go through a metamorphosis.
B) They are both part of the Animalia kingdom.
C) They both have membrane-bound organelles.
D) All of the above.
_______________
Choose all the answers that apply.
Mushrooms are heterotrophic organisms in the Fungi kingdom. Mushrooms _____.
A) are plants
B) make their own food using photosynthesis
C) are eukaryotes
D) are prokaryotes
E) are unicellular
Answer:
depends nut mostly B
Explanation:
Nutrition. Living things take in materials from their surroundings that they use for growth or to provide energy. ...
2 Respiration. ...
3 Movement. ...
4 Excretion. ...
5 Growth.
6 Reproduction. ...
7 Sensitivity.
1.General characteristics of animals include :
mobilitynervous systemspecialized tissueheterotrophicAnimal cell lacks cell wall.
Dorsal cords are present in chordates only, hence can not be included in general characteristics of animals.
2.According to comparative morphology, homologous structures are inherited from a common ancestor.
It is a well defined phenomenon - Homology.
3.Species with low genetic diversity are at a higher risk for extinction than species with high genetic diversity.
Because lower genetic variation depresses individual fitness, resistance to disease and parasites, adaptability to the changing environment.
hence they are at higher risk for extinction.
4. Mushrooms are heterotrophic organisms in the Fungi kingdom. Mushrooms are eukaryotes.
Fungi are eukaryotes as they contain membrane -bound nucleus.
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When comparing plant -eaters and meat-eaters, which of the following choices is most correct?
Meat eaters and plant eaters differences vary greatly between species
Plant eaters are less able to protect themselves from larger meat-eaters
Meat eaters are more aggressive than plant eaters
Meat eater and plant eater size and behavior are related to their place in the food chain
Meat eaters and plant eaters differences vary greatly between species
Answer: Option A
Explanation:
Plant eaters are called as the herbivores and the animal eaters are called as carnivores. Under carnivores and herbivores they are categorized under different species. Species is a kind of individuals that are categorized according to the attributes.
The different species have different diets, different activity pattern. Typical Carnivore species are reflected by their hunting styles, sharp claws. While typical herbivorous species are categorized by their teeth and plant diets.
Plant eaters (herbivores) and meat eaters (carnivores) demonstrate differences in their dietary needs and evolutionary adaptations. Herbivory has coevolved with plant defenses, and the size and behavior of herbivores and carnivores are tailored to their ecological niches, disputing the generalization that carnivores are more aggressive or herbivores less able to protect themselves.
Explanation:When comparing plant eaters (herbivores) and meat eaters (carnivores), it's essential to recognize the differences based on their dietary needs and evolutionary adaptations. Herbivores consume producers such as plants and algae, which are critical in linking producers and consumers within an ecosystem. Carnivores, on the other hand, consume other animals and may be obligate or facultative, meaning some must eat only animals while others can digest plant material but typically do not. In the middle of these two are omnivores that eat both plants and animals, and their diet can vary between being predominantly herbivorous or carnivorous seasonally or through different life stages.
Plant defenses coevolved due to herbivory, with many plants developing strategies like alkaloids, bark, spines, and thorns to deter herbivores. However, some herbivores have also adapted to these defenses.
In relation to the place in the food chain, size and behavior of herbivores and carnivores have evolved to suit their ecological niches and dietary requirements. It is not necessarily accurate to say that carnivores are more aggressive than herbivores or that plant eaters are less capable of defending themselves; it greatly varies among species. The complexity and variation in the interactions between plant-eating and meat-eating animals and their environment point towards a sophisticated ecological balance where each organism's traits are related to its survival and role within the food chain.
Which branch of Earth science is most likely to focus on the formation of rocks and minerals?
Answer:
geology
Explanation:
Geology is the study of the solid Earth. Geologists study how rocks and minerals form. The way mountains rise up is part of geology. The way mountains erode away is another part
Answer
Geology
Explanation:
how do minute rock particles become pollutants in the atmosphere?
Answer:
Rock particles can become pollutants by/from the wind. That is called erosion.
They can also become pollutants from man-made tools. For example a tool the polishes rocks releases all the dust and powder substance from the rock into the atmosphere.
There are also minute volcanic which are rock fragments formed during explosive shattering of sticky magma.
Rheumatoid arthritis is an autoimmune disease which causes the joints in the body to be constantly inflammed. This disease results when body tissues are
A.
attacked by one's own immune system.
B.
infected by a virus.
C.
infected by bacteria.
D.
attacked by oxygenated red blood cells.
Attacked by ones own immune system
Science is based on fact and evidence.
Answer:
True
Explanation:
Answer: yes that is correct
Explanation: Scientist sometimes know the facts but most likley know the evidence of the theory. Scientist you this evidence and facts to make a conclusion or hypothesis hope this helps :)
Match the following parts of a flower with their descriptions.
1. pistil
connects the stem to the flower
2. stamen
5
the most colorful parts of the flower
3. sepal
1
divided into three parts: stigma, ovary, and style
4. receptacle
green, leaf-like covers at the bottom of the flower
5. petals
2
the male part of the flower
Answer:
Pistil: divides into three parts
Stamen: the male part
Sepal: green like covers
Petals: colorful part
Receptacle: connects stem to flower
Explanation:
Flowers are a main and specialized part that plants have, this is because they are responsible for carrying out the process of sexual reproduction, from which the seeds that will give life to the new era of plants of the same species Some of its parts are as follows:
-Peduncle
-Receptacle
-Perianto
-Carpel
-Pistil
-Gineceo
-Androecium
-Petals
How does natural selection change the frequency of genes or traits over many generations? Biology students conducted an experiment mimicking genetic variation and coloration. Students used different colored beans to represent animals that might be prey: mice, for example. A student in each group was the predator: a hawk. Beans (mice) were randomly scattered on multicolored floor tiles and the hawk collected mice (beans) for 10 seconds. Mice not eaten reproduced. Three generations of data a shown in the table. Which coat color provided the BEST protection from predators? A) red B) black C) white D) red striped
Answer:
D) Red striped. If you check the data table, the population with the largest numbers after three generations is the red striped bean (mouse).
Explanation:
USATESTPREP explanation and answer
The coat color provided the BEST protection from predators are the D) red striped.
What is camouflage ?
Both predators and prey animals use camouflage to their advantage. Predators mixture in with the historical past so their prey may not see them drawing close till it is too late. Prey animals want to mixture in as well, so hungry predators byskip proper via way of means of them.
Over the subsequent 8,000 years, however, the mice developed a device of camouflage, with lighter coats, modifications withinside the stripe on their tails, and modifications in frame pigment that allowed them to mixture into their habitat. Now Harvard researchers are the usage of their instance to reply one of the essential questions on evolution.
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Is currents shape rivers over long periods of time true or false?
Answer:
yes
Explanation:
currents of rivers do shape it. it erodes at the sides making it wider and different shapes.
Please help me!
A thunderstorm starts to form when water evaporates to form clouds. Which of the following best explains why thunderstorms usually form on warm days?
A. The warm air over the Earth's surface rises and pushes the clouds higher.
B. The warm air produces a high pressure system, which causes unstable conditions.
C. The water vapor in the air is warmed and this prevents it freezing.
D. The ocean and the land are heated evenly, which forces the clouds to move upwards.
Thunderstorms typically form on warm days because the warm air over the Earth's surface rises, causing water vapor to condense and form clouds which release latent heat, reinforcing and accelerating the cloud's development into a thunderstorm. Hence the correct option is A.
Thunderstorms usually form on warm days because warm air rises rapidly, creating strong updrafts necessary for thunderstorm development. When this warm, humid air rises, it cools and its water vapor condenses forming thunderheads or cumulonimbus clouds. This condensation releases latent heat, which further drives the air upwards in a positive feedback loop, creating the conditions ideal for thunderstorms. The warm air over the Earth's surface rises and pushes the clouds higher, facilitating the development of thunderstorms. This process involves the combination of phase change and convection, where heat from the sun causes water to evaporate, and this water vapor rises. As it condenses higher in the cooler atmosphere, energy is released, causing the air to expand and rise even further.
using the graph below what can you infer about the effects of fishing on this particular population of fish in the years 1850 to 2000?
Answer: Humans started to take more and more fish as technology improved, and this caused the fish population to decline drastically.
By using the graph above, you can say that the population of fish from 1850 to 1960 remains more or less stable, then after 1960 to 1970, it increases very rapidly due to enough resources. Then from 1970 to 1992, it awfully declines due to human activity.
What do you mean by Population?A Population may be defined as the number of individuals of the same species living in a particular area at a given time.
Due to the advancement in technology, the activity of fishing becomes easy and more productive after 1970. It leads to the rapid decline in the population of fish.
Therefore, it is well described above.
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which statement correctly describes the diagram?
Answer: I would say B
Explanation: My reasoning for this is that first off there is no nitrogen in the
Diagram and Photosynthesis is the foundation of the food web and that leaves B.
Answer:
The correct answer is B. Photosynthesis and cellular respiration are involved in carbon and oxygen cycle.
Explanation:
Photosynthesis is the process by which plants make their food in the form of glucose from CO₂ and H₂O by the help of chlorophyll in the presence of sunlight. Plants release oxygen as a by-product which is taken by other organisms thus completes the oxygen cycle.
Respiration is the process in which oxygen is taken in the body by animals and plants and release in the form of CO₂ in the environment. This CO₂ is again taken by plants for photosynthesis which complete the carbon cycle.
Therefore, the correct answer is B. Photosynthesis and cellular respiration are involved in carbon and oxygen cycle.
What is shown in the photograph below?
©Coara DelorealbdTI.
Answer: Can you add a picture?
The various images or photographs described in the question touch on multiple subjects including physics with a focus on total internal reflection in an underwater photograph, art history with a focus on colonial-era artworks, and astronomy with photos of the Sun and the Milky Way.
Explanation:The photograph being asked about is not provided and thus cannot be directly described. However, in the context of the references provided, it appears to discuss several different imagery concepts related to various subjects, such as art and astronomy. Examples of these concepts include underwater imagery, colonial-era artwork, and photographs of celestial bodies.
The underwater photograph that opens one of your chapters appears to capture a semi-illusionary scene of a swimmer seen from under the water. This type of underwater photograph cleverly uses the properties of total internal reflection to capture a reflected image of the swimmer on the water surface. This is combined with taking advantage of view angles to show glimpses of activities happening out of the water.
Subsequent images and illustrations noted in your question are in the realms of art history, depicting different scenarios of human life and culture, including slavery, farming, and reversed societal norms. Some other images discussed depict astronomical phenomena, such as images of the Sun and the night sky accentuating features of the Sun's corona and the Milky Way Galaxy respectively, taken through advanced telescopic technology.
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what is the symbiotic relationship between a bee and a flower?
a bee pollinates flowers to help it grow
Bees, which are know for aiding in pollination, help with which process
Answer:
With the process of pollination, so we can have fruit.
Explanation:
Answer:
They help us with the process of pollination
Explanation:
1) What does Newton’s law of universal gravitation say about the distance between objects?
2) How does a free-body diagram tell you about the net force on an object?
3) Stone has a mass of 100 grams and a volume of 10 mL. Water has a density of 1 g/mL. Will the stone float or sink?
4) How does Archimedes' principle explain how much fluid is displaced by an object?
5) What does Hooke's law say about the relationship of spring to the force applied to it?
6) How can you increase the momentum of an object?
7) When is a collision considered inelastic?
8) A satellite traveling 1,000 m/s approaches a second satellite that is at rest. They both have the same mass. What will happen to their speeds when they connect and move off together?
You don't have to answer all of them just try and answer as many as you can it would be a big help ^^
Sorry These Are Out Of Order
"6" if you increase either mass or velocity the momentum of an object increases proportionally if you double the mass or velocity you double the momentum
"5" that it will turn to its original shape after it is let free of the force hope this helps
"4" Archimede's principle states that a body immersed in a fluid is buoyed up by a force (buoyant force) equal to the weight of the fluid displaced by the body.
So If I place a 5 oz rock into a glass of water, and 5 oz of water is displaced, the rock therefore weighs 5 oz
"3" To find if the stone will sink, we have to find out the density of the stone.
Density = mass/volume = 100g/10ml = 10g/ml
To stone will sink because it has a higher density.
"2" a free-body diagram shows the vectors for all the force acting on the body the resultant vector found by summing all the individual vectors represents the net force.
"8"
The formula for computing the final speed of a perfectly inelastic collision is
m1V1 + m2V2 = (m1 + m2)Vf
in this case the mass are equal so
m1V1 + m1V2 = (m1 + m1)Vf
m1(V1+V2) = 2(m1)Vf
thus
(m1(1000 + 0)) / 2m1 = Vf
Vf = 500 m/s
Hope my answer would be a great help for you.
scientists are constantly learning more and more about fossils because...
a) new fossils are continually being discovered
b) fossilization is a common process, si there are many fossil samples for nearly all species that have existed on Earth.
c) fossils provide different information at different times of a day and in different locations
d) the fossil record is complete, covering every species that has lived on Earth
c)
Answer:
a new fossils are constantly being discovered
Explanation:
new fossils are continually being discovered so a
explain why HHS workers should not impose their own values on their client while advocating for client needs?
Answer:
HHS stands for Heath and human services.
Explanation:
Department of Health & Human Services (HHS), also known as the Health Department. It is a cabinet-level department in U.S. People working in the helping departments should not impose their own values on the client.
Value imposition is a type of boundary violation that can interfere with clients's progress in treatment as well as their right to self-determination.
If these workers will not be careful and aware, their values can present some difficulties and significantly affect their work with clients.
HHS workers should not impose their own values on clients because its an attempt to exert direct influence over their beliefs, feelings, judgments, attitudes and behaviors.
Which type of organism is at the lowest level of the food chain?
omnivore
carnivore
autotroph
heterotroph
Answer:
heterotroph
Explanation:
A heterotroph is an organism that cannot fix carbon and uses organic carbon for growth. Heterotrophs can be further divided based on how they obtain energy; if the heterotroph uses light for energy, then it is considered a photoheterotroph, while if the heterotroph uses chemical energy, it is considered a chemoheterotroph.
heterotroph type of organism is at the lowest level of the food chain. Thus, the correct option is D.
What is heterotroph?A heterotroph is defined as an organism which eats other plants or animals for energy and nutrients.
Heterotrophs positioned at the second and third levels in a food chain from the lowest, a sequence of organisms which provide energy and nutrients for other organisms. Each food chain comprised of three trophic levels, that describe an role of organism in an ecosystem.
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What would happen if (G) guanine lined up with (T) thymine during meiosis. Please help me with this.
Answer:they won't for a pair
Explanation:Basically it all depends on process called complementary base pairing, the structure of thymine and adenine is such that it forms two hydrogen bonds and therefore pair up
2.guanine and cytosine have such structure that they form three hydrogen bonds and pair up
So Adenine complements only thymine and guanine complements cytosine and there aren't any chances of guanine pairing up with thymine.
Which of the following is not evidence for the law of conservation of mass during cellular respiration?
A. The total number of atoms when glucose and oxygen react stays the same when carbon dioxide and water are produced.
B. C6H12O6 + 6 CO2 + 6 H20 + energy
C. The products from cellular respiration are created from the same elements (carbon, oxygen, and hydrogen) that make up reactants.
D. Cellular respiration creates an energy molecule when glucose is broken down.
i think that the answer is A.
Faults are generally closely associated with
Answer:
boundaries of the tectonic plates
Explanation:
The faults are cracks that appear on the Earth's crust. They can vary a lot in length, depth, and width, and they are found in multiple places around the globe. In general, the faults are associated with the boundaries of the tectonic plates, or rather they are the ones that are the boundary between the tectonic plates, mostly between the subduction zones and the transform plate boundaries. The faults are made out of two basic parts, the foot wall and the hanging wall. The foot wall is the one that is bellow the ground, while the hanging wall is sticking above the ground. There's few types of faults, such as the strike-slip faults, dip-slip faults, and oblique-slip faults.
which body system makes blood, stores minerals, protects internal organs & allows muscle attachments
the answer is skeletal system
Final answer:
The skeletal system is responsible for making blood, storing minerals, protecting internal organs, and enabling muscle attachment. It supports the body, facilitates movement, protects vital organs, stores minerals like calcium and phosphorus, and houses the hematopoietic system for blood cell production.
Explanation:
The Skeletal System: Vital Functions
The body system responsible for making blood, storing minerals, protecting internal organs, and allowing muscle attachments is the skeletal system. The skeletal system consists of bones, cartilage, and ligaments. It supports the body, facilitates movement, and plays a crucial role in maintaining overall health and functionality. The bones protect vital internal organs such as the brain, heart, and lungs, and serve as storage for essential minerals like calcium and phosphorus. Additionally, the bone marrow within the bones is crucial for the production of blood cells and stores fat, a process known as hematopoiesis.
Support, movement, and protection are apparent functions of the skeletal system, visible by observation. Muscle attachments to the skeleton are essential for movement, with muscles contracting and pulling on the bones to create motion. The skeletal system is subdivided into two major parts: the axial skeleton, which includes the skull and spine, and the appendicular skeleton, which includes the limbs and girdles. Both divisions play roles in supporting the body, permitting movement, and protecting internal organs.
Scientists who studies wildlife in and around the Great Lakes area found their results to be disturbing.A large number of birds were born with partially developed eyes,crossed bills and webbed feet.What can infer is the reason?
Some key reasons for partially developed offspring:
• Genetic issues, parents sexual organs incorrectly formed, in turn malforming the offspring
• Pollution, parents consuming something they shouldn't have while the offspring was developing
• Breeding between relations; accidently mating with a brother or sister, in turn causing defects as many of the genes are the same
a material that has definite volume but no definite shape is classified as a
Answer:
gas
Explanation:
Gas has a volume but doesn't take specific shape.
liquid. liquids have a definite volume but no definite shape.