I would say disruptive selection, because the sudden eruption of the volcano disrupted the circumstances of the lizards, allowing the black ones to survive better because of camouflage against the black rock.
Hope this helps!
The change in the lizard population after the volcanic eruption is an example of directional selection, where the environment favors one extreme phenotype, leading to a genetic shift.
The scenario where a volcanic eruption on an island causes the environment to change in a way that favors black lizards over white and grey lizards for survival is an example of directional selection. This type of natural selection happens when environmental changes favor phenotypes at one extreme of the existing variation within a population. In this case, the black lizards are naturally selected because they are better camouflaged in the environment covered with volcanic ash and hardened lava flows, thereby increasing their chances of survival and reproduction. This results in a shift in the population's genetic variance toward the darker, fit phenotype.
Which best describes red blood cells?
A. They are colorless
B. They protect against disease-carrying microorganisms
C. They transport oxygen throughout the body
D. They aid in blood clotting
Answer:
C. they transport oxygen throughout the body
Explanation:
it's because RBC contains pigment called haemoglobin and it's function is to carry oxygen
A key difference between green algae and land-based plants is that
A. land-based plants don't have vascular tissue and must absorb nutrients directly from the environment.
B. green algae don't have chloroplasts and absorb their food rather that perform photosynthesis.
C. green algae don't have vascular tissue and must absorb nutrients directly from the environment.
D. land-based plants breath in carbon dioxide while green algae consume oxygen.
Answer:
C. green algae don't have vascular tissue and must absorb nutrients directly from the environment.
Explanation:
Green algae are avascular organisms and lack the vascular tissues, that is they do not have xylem and phloem. They have a simple thalloid body and absorb nutrients from surroundings. On the other hand, the land-based plants have vascular tissues to transport food, water, and minerals from one plant part to the others.
The law of____ suggests that the orbit of planets is not circular but___
Answer:
The law of ellipses suggest that the orbit of planets is not circular but elliptical.
Explanation:
Explained by the first of Kepler's three laws of planetary motion.
Answer:
Ellipses; elliptical
Explanation:
The Law of Ellipses is one of the three laws of planetary motion developed by scientist Johannes Kepler in the early 1600s. These three laws accurately describe how satellites move in outer space. The Law of Ellipses argues that the path of the planets is elliptical in shape, with the centre of the sun being located at one focus.
What are the three domains of life? (Choose all that apply)
Answer:Archaea, Bacteria, and Eukarya
Explanation:
Answer: (D) on edge
Explanation:
Bacteria, Archaea, Eukarya
Approximately when did the first plant and arthropods appear on land
Answer:
470 million years ago
Explanation:
Both the plants and the arthropods initially developed and lived in water. As the atmosphere was changing though, they gradually started to develop for life on land, which eventually gave birth tot he first plants and arthropods that were fully terrestrial. The first plants on land occur around 470 million years ago in the fossil records, while the first arthropods around 450 million years ago, though the genetic analyses have shown that they were present on land around 20 million years earlier. The first terrestrial plants were small, simple, and had small and not well developed roots. The first arthropods though, the millipedes, centipedes, and scorpions, were almost identical to the ones we have in the present, being well developed and adapted for terrestrial life.
Answer:
444 Ma
Explanation:
difference between a theory and a law?
Answer:
Generally, laws describe what will happen in a given situation as demonstrable by a mathematical equation, whereas theories describe how the phenomenon happens.
safety precautions in the biology laboratory
Answer: Biology safety precautions
Explanation:
1. Be Prepared.
2. Be Neat.
3. Be Careful.
4. Wear Proper Clothing.
5. Be Cautious With Chemicals.
6. Wear Safety Goggles.
7. Locate Safety Equipment.
Answer:you want to make sure you have the proper equipment such as glasses or gloves and to follow instructions
Explanation:
PLZ HURRY IT'S URGENT!
Which answer correctly describes the difference between covalent and ionic bonds?
A.
ionic: transfer of electrons
covalent: transfer of protons
B.
ionic: sharing of electrons
covalent: transfer of electrons
C.
ionic: transfer of electrons
covalent: sharing of electrons
D.
ionic: transfer of protons
covalent: transfer of electrons
Answer: D.
ionic: transfer of electrons
The correct answer is C. the difference between covalent and ionic bonds is ionic: transfer of electrons; covalent: sharing of electrons.
Ionic bonds are formed when one atom donates an electron to another atom, resulting in the formation of a positively charged cation and a negatively charged anion. These oppositely charged ions are then attracted to each other by electrostatic forces, creating an ionic bond. This process involves the transfer of electrons from one atom to another.Covalent bonds, on the other hand, are formed when two atoms share one or more pairs of electrons. This sharing allows each atom to achieve a stable electron configuration. Unlike ionic bonds, electrons are not transferred from one atom to another; instead, they are shared between the atoms, creating a molecular bond.
cytokinesis in animal cells:
occurs after telophase
is accomplished by a ring of contractile fibers
works from the outside inward
all of these
Answer:
all of these
Explanation:
cytokinesis in animal cells:
occurs after telophase
is accomplished by a ring of contractile fibers
works from the outside inward
Observations of Cells in Stages of Cell Cycle
Sample: Number of Cells in Interphase Number of Cells in Prophase Number of Cells in Metaphase Number of Cells in Anaphase Number of Cells in Telophase
Sample A 6 15 4 7 8
Sample B 25 4 2 3 1
Sample C 4 9 5 3 6
You are observing different tissue samples and classifying the cells into their respective stage in the cell cycle. What can you conclude about Sample B based on these observations?
A) Sample B Is is most likely cancerous because most of the cells are in interphase.
B) Sample B is most likely cancer tissue because most cells are in some stage of mitosis.
C) Sample B is most likely a normal tissue sample because most of the cells are in interphase.
D) Sample B is most likely a normal tissue sample because most cells are in some stage of mitosis.
I think its D but I'm not sure
Answer: The Correct answer is
C) Sample B is most likely a normal tissues sample because most of the cells are in interphase.
Explanation:
Biology is the study of ___
Answer:
Biology is the study of life (the structure, function, growth, origin, evolution and distribution of living organisms).
Explanation:
which is a reliable source of scientific information
Answer:
a website with .edu .gov or a book written by a famous professsor or scientist
Explanation:
Answer: C
Explanation:
An organism is found that has the following traits:
• Has a backbone
• Has lungs
• Can reproduce on land
What kingdom does this organism most likely belong in?
A. Animalia
B. Plantae
C. Prostisa
D. Fungi
Answer: A. Animalia
Explanation:
The correct answer is option (A) Animalia
What are amphibians?
Amphibians are vertebrates (animals with a backbone) that can live both in water and on land in adulthoodWhat do you mean by kingdom?
In biology, kingdom is a taxonomic rank composed of smaller groups called phyla (or divisions in plants). Historically, kingdom is the highest taxonomic rank, or the most general taxon used to classify organismsLearn more about kingdom below
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Most of the major advances in marine biology have come in the last 200 years. What do you think are the reasons for this?
Marine biology involves the study of the behavior, and interaction of marine organisms. Marine biology advancements occurred in the last 200 years due to innovations and the development of new technologies.
What is marine biology?Marine biology is the branch of biology that is a field of study that deals with marine life, its behavior, interaction, community, and ecosystem. It includes the study of both biotic and abiotic factors.
Marine biology has seen major advances in the last 200 years as there has been an increase in the development of cutting-edge technologies and inventions that have made research in deep oceans easier.
The innovations of the new tools and machines have enabled the researchers to go deep into oceans and allowed them to conclude the experiment with various techniques and machines.
Therefore, the advancement in technologies has increased the research on oceans and seas.
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Major advances in marine biology are due to technological and scientific innovations, a shift in fisheries management towards conservation, and increased research funding. The influence of key historical figures also contributed to the development of the field.
The significant advancements in marine biology over the last 200 years can be attributed to several factors. One of the key reasons is the integration of technology and engineering into biological studies, which has revolutionized research processes and outcomes in marine ecosystems. Furthermore, as a response to the marked declines in fish populations and shifts in marine food webs over the past half-century, there has been an evolution in fisheries science and management, transitioning from purely commercial exploitation towards a more holistic, conservation-focused approach.
Advancements in bioinformatics and methodological techniques, largely driven by the biomedical field, have also made a considerable impact on marine biology. There is now a heightened awareness and respect for the complex and rich biodiversity in our oceans, which is catalyzed by the development of high-tech equipment and increased funding for studies exploring marine biodiversity, such as animal-microbiome interactions. This is complemented by the recognition that marine animals offer valuable models for studying resilience and adaptations in changing oceanic conditions.
A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how the cell could be classified
The cell would be classified as a plant cell. Animal cells have cytoplasm, DNA, a cell membrane, but do not contain chloroplasts. Those are only found in plant cells and some protists. Chloroplasts are used to convert light energy into sugars that the cell can use.
Answer:
D) The cell is eukaryotic because it has chloroplasts.
The diagram below represents the time a cell spends in the two main phases of
the cell cycle. In which phase does a cell spend less time?
Option D. The cell is dividing.
The two main phases are interphase and mitosis
As far as my knowledge goes, the yellow area is mitosis, and mitosis is a process of cell division that results in two new nuclei (each containing a complete copy of the parental chromosomes).
The cell cycle is a series of events that leads to the development of two daughter cells from a parent cell. The two main phases of the cell cycle are interphase and mitosis. Interphase is the longest phase of the cell, while mitosis takes much less time than interphase.
During the interphase cell prepares for division and replicates its DNA, while the mitotic phase involves actual cell division. During mitosis, division of the nucleus and cytoplasm takes place to form two daughter cells.
What are the cell cycle's 4 stages?The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage), copies its DNA (synthesis, or S, stage), prepares to divide (gap 2, or G2, stage), and divides (mitosis, or M, stage). The stages G1, S, and G2 make up the interphase, which accounts for the span between cell divisions.
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What is ultraviolet radiation
Answer:
Radiation in the part of the electromagnetic spectrum where wavelengths are just shorter than those of ordinary, visible violet light but longer than those of x-rays.
Explanation:
Ultraviolet radiation (UV) is a type of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays, ranging from 400 nm to 10 nm. It is mostly blocked by Earth's ozone layer but can cause skin issues like sunburn or skin cancer with extensive exposure. Observing UV astronomy is preferably done from space to avoid absorption by the atmosphere.
Ultraviolet radiation (UV) is a form of electromagnetic radiation that is more energetic than visible light but less energetic than X-rays. The term 'ultraviolet' means 'beyond violet', indicating that UV light has a higher frequency than the violet end of the visible spectrum. UV radiation has wavelengths ranging from about 400 nanometers (nm) down to 10 nm, which positions it between visible light and X-rays on the electromagnetic spectrum. While invisible to the human eye, UV radiation can have various effects, such as causing sunburn or even skin cancer with excessive exposure. The majority of UV radiation from the Sun is blocked by Earth's ozone layer, but the fraction that reaches the surface has significant biological effects. For astronomers, observing the universe in ultraviolet wavelengths is best done from space due to Earth's atmosphere absorbing most of the UV radiation.
Which statement correctly compares the thicknesses of Earth’s layers?
Answer:
Option D, Earth’s lithosphere is thinner than its asthenosphere
Explanation:
The complete question is as follows -
Which statement correctly compares the thicknesses of Earth’s layers?
A. Earth’s mantle is thinner than its oceanic crust.
B. Earth’s outer core is thicker than its mantle.
C. Earth’s continental crust is thicker than its lithosphere.
D. Earth’s lithosphere is thinner than its asthenosphere.
Solution -
Oceanic crust and Continental crust are not the layers of earth. There are majorly three layers of earth crust – a) Core, b) Mantle and c) crust.
The core is further divided into inner core and outer core. Therefore, comparison between earth’s layers will be possible when the characteristic of three layers (physical, chemical etc.) are compared with each other. Lithosphere and asthenosphere form the part of crust and hence comparison between them can also be considered as comparison between layers of earth
Thus, option D is correct
What is meant by the reproductive system?
Answer: Definition of reproductive system. : the system of organs and parts which function in reproduction consisting in the male especially of the testes, penis, seminal vesicles, prostate, and urethra and in the female especially of the ovaries, fallopian tubes, uterus, vagina, and vulva.
Explanation:
Which graph represents a nonlinear relationship?
Answer:option 4 on edgunity
Explanation:
Which statement best describes lactic acid fermentation?
A. Lactic acid fermentation is the first step of cellular respiration.
O
B. Lactic acid fermentation is the final step of cellular respiration. .
RE
TO
BERATE
C. In the absence of oxygen, cells release ATP by breaking down
lactose into glucose.
E
DER
LADE
RES
O
D. In the absence of oxygen, cells release ATP by breaking down
glucose into lactate.
AR
Answer:
d. In the absence of oxygen, cells release ATP by breaking down
glucose into lactate is the correct answer.
Explanation:
lactic acid fermentation occur in the absence of oxygen, cells release ATP by breaking down glucose into lactic acid.
lactic acid fermentation is a process in which sugars example ( sucrose, fructose, and glucose) are converted into energy and lactate
when there is not sufficient oxygen available during physical activity and in that case, muscle produces lactic acid to provide energy during a physical workout by a process called lactic acid fermentation that generates ATP in the absence of oxygen and it provides energy to cells.
9. Which of these are considered standard precautions for dealing with bodily fluids? Check all that apply
wearing gloves when providing patient care that may involve contact with blood
checking a patient's chart to determine if there is a harmful blood disorder
wearing aprons, masks, and protective eyewear when needed
transporting a patient from a bed to a wheelchair to take him or her to a procedure
washing hands when required
cleaning equipment thoroughly before using it on the next patient
Final answer:
Standard precautions for dealing with bodily fluids include wearing gloves, using protective gear, washing hands, and cleaning equipment.
Explanation:
The standard precautions for dealing with bodily fluids include:
Wearing gloves when providing patient care that may involve contact with blood or other body fluids.
Wearing aprons, masks, and protective eyewear when needed to protect against splashes or sprays of blood or other body fluids.
Washing hands when required, as proper hand hygiene is crucial in preventing the spread of infections.
Cleaning equipment thoroughly before using it on the next patient, to ensure that there is no risk of transmission.
What are the methods of heat transfer? Check all that apply.
absorption
conduction
convection
radiation
reflection
Answer:
conduction
convection
radiation
Answer: conduction
convection
radiation
Explanation:
Heat is a form of energy which is called as thermal energy. The heat is transferred from one body to another or from one medium to another by three methods:
The three methods includes the conduction, convection and radiation. The conduction
Conduction: This involves the transfer of heat through direct contact of the solid bodies. The heat travels from a warmer entity or body to the colder entity or body.
Convection: This involves the transfer of heat when the warmer areas of a typical liquid or gas moves to the cooler areas of the liquid or gas.
Radiation: This involves the transfer of the heat energy through electromagnetic radiations like ultraviolet and infrared.
PLEASE HELP!!!!!!! ASAP!!!!!!!!
Kangaroo rats live in grasslands and do not drink water. They get water from eating seeds. Based on this, what is a limiting factor for kangaroo rats?
a. grass
b. fur
c. salt
d. seeds
Answer:
D) Seeds
Explanation:
With the given knowledge of the organism eating seeds and nuts, living in burrows, the availability of water dense food and having to not drink any water, this organism is adapted to live in arid and semiarid area, such as deserts, rocky areas, grasslands and scrublands.
Kangaroo rats live in grasslands and do not drink water. The limiting factor for kangaroo rats would be seeded. While they are able to obtain water from seeds, the availability of seeds may limit their population growth and survival. Hence option D is correct.
What are grasslands?Grasslands, also known as prairies, are areas of land that are dominated by grasses, with few trees or shrubs. They are found on every continent except for Antarctica and are typically located in the interior regions of continents, away from the moderating effects of oceans.
Grasslands can vary in size from small patches to vast expanses that stretch for thousands of miles. They are home to a diverse array of plant and animal species, many of which are adapted to the unique conditions found in grassland environments.
If the population of plants producing the seeds were to decline, it could lead to a decline in the population of kangaroo rats as well.
Hence option D is correct.
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Give two example of things that can make cancer more likely
Answer:
Sun exposure and Tobacco
Explanation:
Tobacco links to lungs cancer because of the tar and carbon monoxide which reduces the amount of oxygen that can be carried by red blood cells
How is coal obtained to use for energy?
It is mined then crushed into powder so it burns quicker. The heat is used for energy.
Answer:
Coal can be extracted from the earth either by surface mining or underground mining. Once coal has been extracted, it can be used directly (for heating and industrial processes) or to fuel power plants for electricity. If coal is less than 61 meters (200 feet) underground, it can be extracted through surface mining.
Identify two examples of chemical reactions that you have encountered during the last week. Identify an exothermic and endothermic reaction. Explain.
There are two types of chemical reactions exist in nature: endothermic and exothermic.
What are the endothermic and exothermic reaction?
An Exothermic Reaction occurs when energy is released from the system into the surroundings. Endothermic Reactions take place when energy is absorbed from surroundings in the form of heat.
Burning of a Candle. ..Rusting of Iron. ..are two exothermic reaction and Melting ice, evaporation, cooking, gas molecules, photosynthesis are some endothermic reaction i have encountered during my daily life.
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Question 12 (5 points)
Which region contains the halogen family of elements
Answer:
The answer is C.
Explanation:
Halogens occupy Group 17 of the Periodic Table. This group contains six different nonmetallic elements.
Answer:
C
Explanation:
The reason is that C represents group 17 of the periodic table, the halogens.
The halogens are a group of elements (in group 17) that are one electron short from achieving their full octet, and being stable. Due to this fact, they are extremely reactive, and will react with almost any substance to accept that one extra electron to become stable.
The other groups represented by letters are:
A- Alkali metals
B- Alkaline metals
C- Halogens
D- Nobel gasses
How does a pond form?
Hello There!
-There are 2 possible ways that a pond could form-
The first way it could happen is because of erosion. Erosion is the movement of weathered materials. This includes gravel, soil, and sand. This is the reason why the Earth's surface is always changing.
The second way ponds could made is by a person. This is called man made because someone had to be able to build hem
Answer:
Ponds form when water begins to fill in a depression in the ground. ... As the plants decompose, layers of soil build up and the pond becomes shallower and shallower. As the pond becomes more shallow, the plants on the edge of the pond may begin to grow in the pond.
Explanation:
Which of the following is the most prominent difference between brand-name medications and generic medications? A. Brand-name medications are easier to purchase because generic medications usually need to be specially ordered. B. Brand-name medications have a guarantee of quality and effectiveness from the manufacturer and generic medications don't. C. Generic medications contain the same ingredients as brand-name medications, but the ingredients in brand-name medication are of a higher quality. D. Brand-name medications contain a trademark and generic medications are referred to by the name given to them based on their chemical makeup.
Answer:
A. Brand-name medications are easier to purchase because generic medications usually need to be specially ordered.
Explanation:
Generic medications are not an over the counter supply because some people might not use them as they should be used. You have to set up an appointment with a doctor to get these medications ordered for you.