Different versions of the same trait are referred to as

How does impact accretion contribute to the differentiation of different layers in a planetiesimal? It provides potential energy. It provides mechanical energy. It provides electrical energy. It provides thermal energy.

In Australia, researchers tested the hypothesis that sea urchin abundance limits kelp distribution. Select the evidence that offers the best support for this hypothesis. A.

Do more-complex organisms always have more chromosomes than simpler organisms do? How do you know?

There are 4,000 units of energy available to grass at the first trophic level of an ecosystem. If the grass is eaten by a mouse and the mouse is eating by an owl how many units of energy will be left for the bobcat that eventually eats the owl

In photosynthesis what substances are produced

When light is refracted, the degree of bending is determined in part by?

How are organisms grouped in an ecosystem? a. by their movement b. by how they get their energy c. by how they migrate d. by how they produce

What happens to about 10 percent of the energy represented in each trophic level?

Is a lion is a carnivore?

How does the biological species concept define a species?