Why are there less organisms as you move up the energy pyramid?

Primates that walk on two feet are now called

Hikers are attempting to cross the arizona desert with a small supply of water. the temperatures cause them to sweat profusely and become dehydrated. the hikers are experiencing:

Which discovery in the 1800s lead to the development of germ theory

As ocean depth increases, pressure increases, and temperature decreases. True False

A marine scientist in California wants to study the habitat of Atlantic blue crab, a species of crab found around the Chesapeake Bay. How can he best study the habitat of these organisms

Why is regualtion of the cell cycle important?

Which of the following is not water soluble?

If the concentration of oxygen in a body tissue cell is 5% and the concentration of oxygen in the blood surrounding the cell is 10%, which direction will the oxygen diffuse?

What is the type of allele that only affects the phenotype in the homozygous condition?

Major natural events, such as volcanic eruptions, significantly change the environmental conditions of the areas where the events occur. What happens to local populations that are unable to adapt to the new conditions or to move to other areas?