please answer these 6 questions for ten points?

Question

Question 41 (Multiple Choice Worth 2 points)

_______ cause(s) populations to change over time.

Natural disasters

Natural selection

Weather

Genes



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Question 42 (Multiple Choice Worth 2 points)

What type of rocks would you expect to find on a volcanic island?

Sedimentary

Metamorphic

Igneous

Lava



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Question 43 (Multiple Choice Worth 2 points)

Which type of relationship benefits both species?

Mutualism

Competition

Parasitism

Commensalism



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Question 44 (Essay Worth 4 points)

Explain how energy is transferred in a food web.






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Question 45 (Essay Worth 4 points)

List and describe two ways that scientists can date fossils found in the earth.






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Question 46 (Essay Worth 4 points)

Compare and contrast the terms genotype and phenotype. Describe at least two ways that they are alike and two ways that they are different.

Answer 1

41) There should be an option for "all of the above."



42) Igneous



43) Mutualism



44) pass



45) a. Carbon dating. We know the half life of carbon 14. While you're alive, carbon enters and leaves your body on a continual basis so that your bodily carbon is in equilibrium with your environment. But when you die, the carbon you have in your body stays there. As the C-14 in your body decays, your body is no longer in equilibrium with your environment. Since we know the half-life of C-14, and we know the ratio of carbon 14 to other isotopes of carbon naturally occurring in the environment, we can know how long ago something died.



b. We can date things based on what layer of rock they are found in if we know how old the layer is or how old other things found in that layer are.



46) pass

Answer 2

Question 41- natural disasters



Question 42- Igneous



Question 43- Mutualism ( because mutual means 2)



Question 44- Energy is transfered in a food way from the sun to plants to animals. The sun is the main source of energy for all organisms. Plants use energy from the sun to make food. Animals eat plants. Therefore the energy is being transfered.



Question 45- By their teeth and body structure, scientists can date fossils. Examining their teeth will show scientists how old it is and what it ate. Examining their body structure can tell how old they are.



Question 46- Genotype and Phenotype are alike because a phenotype is the result of a specific genotype and they both result in an organism. They are different because a genotype is the genetic makeup of an organism and a Phenotype is the physical trait of an orrganism.



Hope this helped! =)

Answer 3

41. Natural Selection

42. Metamorphic

43. Mutualism

44. When an animal eats something that is a little smaller it gets the energy from what it ate. Then when something a little bigger comes along and eats the larger animal then it gets its energy and so on.

45. carbon dating

46. genotype is how the genes are presented in the DNA and phenotype is the physical characteristic that is displayed

Answer 4

Natural Selection

Igneous

Mutualism



Food webs: think about how food webs work...which way does the energy go? Think about the amount of energy each succesive stage needs. Where does the first stage (plants) get its energy? How is it released in the last (prey) stage?



Fossil dating: carbon dating is one, a simple google search will get you the other one



Genotype and phenotype: you need to know about these in order to explain genetics; genotype is what your genes say, and phenotype is what characteristic you display. If that sounds contradictory to you, then definitely read up in your textbook. The definitions should explain it clearly.



(I hope this helps in understanding)

Answer 5

1.Natural selection

2.Igneous

3.Mutualism

4.A food web consists of several components; primary producers, primary consumers, secondary consumers, tertiary consumers, and so on. Primary producers include green plants and are the foundation of the food web. Through photosynthesis, primary producers capture some of the Sun's energy. The net rate of photosynthesis, or net primary productivity (NPP), is equal to the rate of photosynthesis minus the rate of respiration of plants. In essence, NPP is the profit for the primary producer, after their energy costs associated with respiration are accounted for. NPP determines plant growth and how much energy is subsequently available to higher trophic levels.



Primary consumers are organisms that feed directly on primary producers, and these comprise the second trophic level of the food web. Primary consumers are also called herbivores, or plant-eaters. Secondary consumers are organisms that eat primary consumers, and are the third trophic level. Secondary consumers are carnivores, or meat-eaters. Successive trophic levels include the tertiary consumers, quaternary consumers, and so on. These can be either carnivores or omnivores, which are both plant- and animal-eaters, such as humans.

Answer 6

Sounds like you are doing a biology test. I'll give you the first 3 answers. Essay questions should be in your own words.



1)natural selection

2)igneous

3) mutualism

Answer 7

Natural selection





Igneous





mutualism



genotype is genes phenotype is how they look

Answer 8

"Do Your Own Homework"! Love, Mom