The wall of the capillaries and the alveoli are very thin. Why do they need to be thin?

When a predator feeding on certain prey is removed from the environment, which variable will most likely determine whether or not the prey will survive?

Speckled and striped beans (mice) had the best survival rates. Why? A) They reproduced very rapidly. B) Coloration was a form of camouflage. Eliminate C) They mimicked other mice and were spared. D) The speckled and striped beans had a wider range.

Describe the reproductive process of human being

Plants release a different gas back into the air. What is the name of that gas

Which is larger? 1 kilometer or 1 meter

Energy moves along a food chain when A. animals drink water from a stream. B. animals breathe air. C. plants use the Sun's energy to make food.

What organelle has vesicles migrate to the cell membrane?

Does anybody have the answers to the whole test?

In levels of orginization within an organism what is the order of these words; element, compound, organelle, cell, tissue, organ organ system

Why is fresh water a limited resource? Groundwater is too difficult to access Most water covering Earth is salt water. The supply of water on Earth decreases over time. Too much water is wasted on irrigation