Answer:
OD. all of the above
Explanation:
Asteroids are lumps of rock or iron that orbit the sun.
Comets go around the Sun in a highly elliptical orbit. They can spend hundreds and thousands of years out in the depths of the solar system before they return to Sun at their perihelion.
Asteroids orbit the Sun in a region between Mars and Jupiter. This "belt" of asteroids.
The greenhouse effect is responsible for which environmental condition listed below?
A) global warming
B) thermal pollution
C) photosynthesis
D) clear cutting of rain forests
Answer:A global warming
Explanation:because the adding of greenhouse gases to the atmosphere increases the warming up.
The high surface temperature on Venus of ________ is due to the __________.
700 K, greenhouse effect
500 K, acid rain
500 K, volcanoes
750 K, weather
Answer:
Venus is effected by greenhouse effects. A
Producers that are part of your diet
Answer:
and plant so fruits and vegetables
•lettuce
•carrots
•spinach
•carrots
•broccoli
•brussel sprouts
•green beans
•snow peas
•seaweed
•kelp
•kiwis
•strawberries
•blueberries
•banana
•cherries
•raspberries
•blackberries
•pomegranates
•apples
•dragon fruit
•starfruit
etc. etc. etc.
☆i hope this helped! :) have a nice day☆
2 Points
Which of these is a cultural service - a nonmaterial benefit people get from
the environment?
O
A. Providing national parks
O
B. Pollinating plants
O
C. Providing building materials
O
D. Recycling nutrients
SUBMIT
Answer:A: Providing national parks
Explanation:
describe the location of the blueprint that determine the structure of each of these forelimbs as the organism develops from embryo to infant
Answer:
The DNA in the nucleus.
Explanation:
The blueprint that contains all of the instructions to "build" and maintain an organism is found in the DNA.
The DNA is the hereditary molecule found in the cell nucleus. The sequence of the DNA determines the expression of genes, which make proteins in the cell. Proteins carry out essentially every function in the cell, including dictating the development of forelimbs.
Therefore, all the information required for the organism to develop is encoded in the DNA.
The location of the blueprint that determines the structure of forelimbs as an organism develops from an embryo to an infant is found in the genetic material within the cells.
These blueprints are known as the homeobox (Hox) genes, which are a group of related genes that control the body plan of an embryo.
During embryonic development, the Hox genes are expressed in a specific spatial and temporal pattern that dictates the identity and position of the developing limbs along the anterior-posterior axis. The Hox genes are located in clusters on particular chromosomes, and each gene in the cluster corresponds to a specific region of the body.
In vertebrates, the forelimbs develop from the lateral plate mesoderm, which forms the limb buds. The Hox genes, along with other signaling molecules such as Sonic hedgehog (Shh), Fibroblast Growth Factors (FGFs), and Bone Morphogenetic Proteins (BMPs), regulate the proliferation, differentiation, and patterning of cells within the limb buds to form the structures of the forelimbs, such as the humerus, radius, ulna, carpals, metacarpals, and phalanges.
The precise regulation of these genes and signaling pathways is crucial for the proper development of the forelimbs. Any disruption in the expression or function of these genes can lead to developmental anomalies or limb malformations.
In summary, the blueprint for the structure of forelimbs is encoded in the Hox genes, which are part of the organism's genome. These genes interact with various signaling pathways during embryonic development to direct the formation of the limbs, ensuring that the correct structures develop in the appropriate locations.
The information presented above suggests that antibiotic resistance is the result of
Answer:
Antibiotic resistance is the result of regular use of same antibiotics for the controlling of harmful microorganisms. Microbes like bacteria got resistance against the medicine used for it and medicine is not helpful in the removal of bacterial disease. When bacteria got resistance against antibiotics, the duration of disease prolonged and sometimes dealth occurs.
Which statement explains how weight is different from mass?
Mass is a varying property
Mass is measured in newtons,
Weight is always greater than mass,
Weight is a measure of gravitational pull.
Answer:
Weight is a measure of gravitational pull.
Weight is a type of force which attracts things towards the center of earth. Weight is measured in Newton. Weight depends on the gravity of earth. Weight changes due to change in height. Value of gravity is higher at the center of earth and six times lower at the moon because of no gravitational force of earth.
Answer:
D.Weight is a measure of gravitational pull.
which of these has been improved by genetic engineering
Answer:
Resistance of corn plants to insects.
Explanation:
Resistance of corn plants to insects has been improved by genetic engineering. The correct option is D.
What is genetic engineering?The modification and manipulation of an organism's genes through technology is known as genetic engineering, often referred to as genetic modification or genetic manipulation.
In order to fix genetic flaws and hence prevent or treat hereditary illnesses, gene therapy aims to change specific genes.
Genetic engineering has increased corn plants' insect resistance. R genes (resistance genes), whose byproducts mediate resistance to particular virus, bacterium, oomycete, fungus, nematode, or insect strains, have evolved inside plants.
Gene silencing is a technique used by plants and insects to effectively fight viruses.
This system views a virus as a gene that is expressing itself inappropriately. As a result, plant cells disable it by cutting the viral RNA into little bits.
Thus, the correct option is D.
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Your question seems incomplete, the missing options are:
A Visibility of insects to predators
B Growth of insects in cornfields
C Reduced number of pollinating insects
D Resistance of corn plants to insects
What special structures are needed for green plants?
chloroplasts and chlorophyll
stems and roots
cotyledon and embryo
flowers and spores
Answer:
chloroplasts and chlorophyll
Answer:
chloroplast and chlorophyll
What happens during interphase?
O
A. The spindles attach to chromatids.
O
B. The chromosomes are duplicated.
O
C. Two haploid gametes are formed.
O
D. Tetrads are pulled apart.
Answer: b. The chromosomes are duplicated.
Explanation: Interphase is when a cell grows and duplicates its DNA in preparation for cell division.
31. Which process is used to produce beer and wine?
a. lactic acid fermentation
b. glycolysis
c. alcoholic fermentation
d. the Krebs cycle
The alcoholic fermentation process is used to produce beer and wine.
Option: C
Explanation:
Answer:
alcoholic fermentation
Explanation:
how much of the ocean is discovered
Answer:
5%
Explanation:
Just 5 percent of Earth's oceans have been explored and charted – especially the ocean below the surface.
What is the proposed ultimate result of global warming?
A) space exploration
B) ice age
C) volcanic activity
D) increased shark attacks
Answer:
C but Humans burning fossil fuel is number 1
will there be any fishes if water couldn't evaporate
Answer:
No, if water is not evaporated, it doesn't affect fishes. Fishes need water for its survival and growth. If water is evaporated from fish tank, the quantity of water is reduced in the tank and fish life is in danger if all water is evaporated. If water is not evaporated from fish tank, it is good for fish growth and development.
As you drive along a road trees in the middle distance seem to shift in position relative to far away hills were name give this ph In the middle distance seem to shift and position relative to faraway Hills what name is given to this phenomenon
Answer:
Parallax
Explanation:
"Parallax" refers to a displacement of an object's position in space (as being seen by an observer) when looking at the object along two varying sight lines. The projection of objects that are near shows a larger parallax than the objects that are farther away.
This is the phenomenon which explains why the road trees in the middle distance seem to shift in a position that is relative to the far away hills.
So, this explains the answer.
a pollutant released on one continent is found concentrated in the tissues of organisms on another continent. Is this likely an air, land, or water pollutant? Explain
Answer:
It is most likely an air and water pollutant.
Explanation:
The continents are separated with water and air. Therefore, if a pollutant is released from one continent, it could have transported to the other continent via water and air. Although the effect of air is less due to dispersing of air masses, it still have a chance to transport the pollutant at far distance. This phenomenon can also be related with the transboundary pollution where a pollutant travels to another place. For example, many persistent organic pollutants have beend detected in the bodies of polar bears living in arctic.
A pollutant found concentrated in organisms across continents is likely an air pollutant, as air pollution can spread far and wide, crossing continental boundaries due to the wind currents and atmospheric deposition.
Explanation:A pollutant released on one continent and found concentrated in organisms on another continent is most likely an air pollutant. This is because air pollution has the capability to spread across vast distances and is known to be a significant nonpoint source of pollution. Airborne contaminants, such as nutrients and pesticides, can travel far from their original source, as they are carried by wind currents and can eventually settle in different regions via atmospheric deposition. This process enables pollutants to contaminate areas far from where they were released, often crossing continental boundaries.
Examples of this long-range transport of pollutants include acidic compounds contributing to acid rain, or industrial emissions leading to the accumulation of chemicals in the food chain of remote areas. The spread of air pollution can result in ecological disasters, as documented by the shrinking of West Africa's Lake Chad, partially attributed to European air pollution that reduced rainfall. While soil and water pollutants also pose significant environmental threats, their movement is typically more localized and less likely to reach distant continents without human activity directly transferring them.
It's important to address air pollution through regulations and awareness, as it not only affects local environments but can also have far-reaching consequences on global ecosystems and public health.
A nuclear membrane forms around the chromatids that came from different chromosomes
Answer:
False
Explanation:
They are identical. It happens during the anaphase. Then during telephase a nuclear membrane will form around each set of chromosomes to separate the nuclear DNA from the cytoplasm.
Why is it important for ecologists to be aware of forest deforestation?
Answer:
Why is it important for ecologists to be aware of forest deforestation?
As an ecologist, both biotic and abiotic interactions matters which calls for deforestation must be curtailed by an ecologist as it reduces the oxygen content in the atmosphere which is essential to life
Explanation:
Final answer:
Ecologists must be aware of deforestation because it leads to biodiversity loss, disrupts the water cycle, and causes soil erosion. Deforestation also diminishes forests' carbon sink function, contributing to climate change. Sustainable forest management and reforestation are essential to mitigate these negative impacts.
Explanation:
It is important for ecologists to be aware of forest deforestation because it leads to significant environmental and ecological issues. The removal of trees at a faster rate than they can be replenished causes loss of biodiversity, disruption of the water cycle, and aggravated soil erosion. In tropical areas, the elimination of trees results in degraded soils that cannot support new forest growth due to the loss of essential nutrients which were once recycled by the forest ecosystem. Furthermore, forests serve as carbon sinks, absorbing carbon dioxide from the atmosphere; their destruction contributes to increased greenhouse gases and climate change.
One of the most critical ecosystems affected by deforestation is the tropical rain forest, renowned for its vibrant biodiversity. These forests are not just home to a plethora of species, but also contribute to potential medical and biological breakthroughs. The extinction of species accelerates as their habitats are destroyed. Deforestation impacts not just the environment but also the native species that depend on these habitats for survival. Ecological balance, poverty alleviation, and sustainable development face significant hurdles due to deforestation.
One of the crucial steps toward combating deforestation involves integrating afforestation, reforestation, and natural regeneration policies. These practices, along with smart management such as strip cutting and secondary forest regeneration, offer hope in mitigating the catastrophic loss created by deforestation. Governments and private sectors must work together to implement policies that curb deforestation and promote sustainable use of forest resources.
How many genes influence a polygenetic trait?
A: one gene
B: more than one gene
C: zero genes, just the environment
D: one gene with multiple alleles
Answer: B: more than one gene
Explanation: A polygenic trait is a trait that is influenced by more than one gene. Every trait is controlled by at least one pair of gene. When a trait is controlled by one gene, it is called a monogenic trait but when a trait is controlled by more than one gene, it is called a polygenic trait. Polygenic traits do not obey mendelian pattern of inheritance and they involve the interaction of multiple genes. Examples of polygenic traits in humans are hair colour, eye colour, skin colour.
Answer:
B
Explanation:
Which of the following is
NOT a type of particle that
is found in the nucleus of
an atom?
A. electron
B. proton
C. neutron
Answer: electron
Explanation:
An atom is made up of subatomic particles: proton, neutron and electron.
Proton and neutrons are found in the nucleus of atoms while electron is found outside the nucleus.
Thus,the only particle not found in the nucleus is electron.
Janet is studying a population of genetically-identical individuals. Janet can conclude that these organisms ____?
A. do not reproduce.
B. reproduce asexually.
C. reproduce sexually.
D. are multi-cellular.
Answer:
B. reproduce asexually.
Explanation:
Janet can conclude that these organisms reproduce asexually. So, the correct option is B.
What is Asexual reproduction?Asexual reproduction refers to a type of reproduction where a child is born to a single parent. The newly created people are copies of their parents since they have the same genetic makeup and physical characteristics.
Both multicellular or unicellular species can reproduce asexually. There will be no gamete fusion involved in this procedure, as well as the number of chromosomes will remain the same. With the exception of specific situations where there is a possibility that a rare mutation will occur, it will inherit the very same genes as the parent.
Therefore, the correct option is B.
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What is heterotroph that consumes the carcasses of
dead animals but does not typically kill them
itself
Answer:
Detritivores, such as earthworms, feed on dead matter. > ... Scavengers, such as vultures, consume the carcasses of other animals.
Explanation:
Final answer:
A scavenger is a type of carnivore that feeds on the carcasses of dead animals without hunting them down. Heterotrophs such as scavengers rely on consuming other organisms for energy, while saprotrophs decompose the remaining organic matter after scavengers have consumed the soft tissues.
Explanation:
A heterotroph that consumes the carcasses of dead animals but does not typically kill them itself is known as a scavenger. These organisms play a crucial role in the ecosystem by breaking down the soft tissues of dead animals, such as the remains of a predator's kill. Scavengers are a type of carnivore and are distinct from predators that hunt and kill live prey. Some well-known scavengers include vultures, hyenas, and certain species of crabs.
Heterotrophs are organisms that cannot produce their own food and thus rely on the consumption of other organisms for energy. They can be classified as photoheterotrophs if they use light for energy or chemoheterotrophs if they use chemical energy. Additionally, near the bottom of the decomposition process, organisms known as saprotrophs, mainly bacteria, and fungi, are responsible for the breakdown of any remaining organic material, completing the process of decomposition started by scavengers and other consumers.
(04.01 LC) Which of these is made up of cells and tissues that perform a larger function? (5 points) Atom Compound Molecule Organ
Answer:Organ
Explanation:An organ may be defined as a group of tissues which perform similar functions. Organs can be found in both plants and animals,functionally related organs often cooperate to form systems. These organs are interdependent on each other to make up organ systems. Organ systems can be found in the different parts of the body. For instance,the esophagus,stomach and liver make up the digestive system and in the excretory system the skin and kidney are examples of the organs that can be found here. The main tissues of an organ tend to have the same embryological origin. This simply means that they arise from the same germ layer and by germ layer we mean the primary layer of cells that form during embryonic development. In plants however,the main organs are the roots,stem and leaves whose primary functions are to give nourishment to the plant. Reproductive organs of plants include the seed,flowers and spores which maintain the basic life processes of the plant.
Answer: Organ
Explanation:
After a 25-year. 95% of the ecosystem was covered by melaleuca. What would be the likely impact of this on wildlife population?
Answer:
The trees grow into immense forests, eliminating all other vegetation. They form impenetrable thickets, displacing native vegetation and reducing the
value of habitats for wildlife. Wildlife is down to melaleuca, birds, bats and bees. Biodiversity is reduced.
Explanation:
Which of the following statements about Australia is true?
A. It is the only former European colony in the Southern Hemisphere.
B. It is the only country that is also a continent.
C. It has the highest average elevation of any country in the world.
D. It is the only country with a mostly desert climate.
Answer:
The statement B. It is the only country that is also a continent, is correct for Australia.
Explanation:
It is a continent due to large mass of land. Australia is derived from a Latin word australis which means southern. Australia is located on the southern part of the world. Australia is surrounded by two oceans i. e. Pacific ocean and Indian Ocean. There are three countries in continent Australia are Australia, New Zealand, and Papua New Guinea.
1. Cells reproduce by splitting in half, a process called cell division. What do cells need to do
between divisions to make sure that they don't just get smaller and smaller?
Answer:
they must grow.
Explanation: what's the point of splitting so you can grow if you don't grow?
(yeah not really specific i know but what else can i say?)
Cells perform DNA replication and organelle duplication during the cell cycle to ensure that after division, daughter cells do not decrease in size but maintain full functionality. This process, which includes mitosis or meiosis depending on the cell type, is critical for proper growth, development, and health maintenance.
To ensure that cells do not just get smaller and smaller with each division, they must grow and duplicate their contents, including DNA replication and organelle duplication. Cell division is one component of the larger cell cycle, which includes preparation for division as well as the actual process of dividing. DNA replication is a critical step that occurs before a cell divides. During DNA replication, the cell's DNA is copied to produce two identical chromosomes.
This ensures that each daughter cell inherits a complete set of DNA, which is essential for producing the proteins necessary for the cell to function properly. In addition to DNA, other cellular components must also be replicated to maintain cell function and size after division. The cell cycle and processes like mitosis in somatic cells and meiosis in sex cells ensure the continuity of life and proper organism growth and development. The accurate copying of genetic information during cell division is imperative for the longevity and health of both single-celled and multicellular organisms.
predict what happens when a cell is placed in a solution with an equal concentration of water outside the cell and inside the cell.
Answer: Nothing will happen.
Explanation: When a cell is placed in a solution with an equal concentration of water outside the cell and inside the cell, there will be no movement of water molecules across the cell membrane. There will be no osmosis because the solution inside the cell and the solution outside the cell are isotonic, this means that they have equal concentration. The two solutions are in equilibrium, therefore there will be no movement of water molecules across the cell membrane. For osmosis to occur there must be different between the water concentration in the two environments.
Which role do bacteria serve?
A. creators of energy
B. recyclers of matter
C. recyclers of energy
D. destroyers of matter
Answer:
I said d
Explanation:
Explain how energy is transferred through a food chain
Answer: Energy is passed between organisms through the food chain. ... Plants harvest their energy from the sun during photosynthesis. This energy can then be passed from one organism to another in the food chain. The organism that obtains energy from sunlight is called the producer. Percentage They have 100% of the energy in a food chain.
The energy is transferred through a food chain in a very precise manner. The process of energy transfer is initiated by plants (producers).
What do you mean by Food chain?The Foodchain may be defined as the sequence of transfers of matter and energy in the form of food from organism to organism.
Plant in the presence of sunlight produces their food, then plants are eaten by herbivores where energy is transferred from plants to herbivores, then herbivores are eaten by carnivores, then energy is transferred from herbivores to carnivores and goes on like that. But one thing keeps in mind, only 10% of the energy gets transferred from one trophic level of the food chain to other.
Therefore, the energy is transferred through a food chain in a very precise manner. The process of energy transfer is initiated by plants (producers).
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Soil pollution is a problem only in areas with a lot of farms.
True
False
Answer: False
Explanation:
It can cause problem other places.
Answer:true
Explanation: