The nebular model explains

a. why the inner and outer planets differ.

b. why the planets are all widely separated.

c. the presence of comets and asteroids.

d. all of the above.

How can solar energy in a house be used

How much does a average animal weigh?

A species is a group of similar organisms that a. can mate with each other and produce fertile offspring. b. can live together on an island. c. can migrate to an island from the mainland. d. all have exactly the same traits.

The process that releases energy from food in the presence of oxygen is?

A rock collection comes from which part of Earth? atmosphere biosphere geosphere hydrosphere

What do amoeba proteus, dinoflagellate, and euglena viridis have in common? a. they all can move and make their own food b. they all can move and use eye spot to locate food c. they all can move and be heterotrophic d.

How is a scientific hypothesis best evaluated?

The overall population of a species decreased. What could have occurred to make this happen? The immigration rate increased, while the death rate decreased. The birth rate decreased, while the death rate increased.

Which of the following terrestrial biomes cannot be found in the United States? A: temperature deciduous forest B: tundra C: desert D: grassland/prairie

Which of these food sources does the bald eagle not feed on? plants fish carrion mammals