Natural selection requires that individuals in a population are

A. genetically diverse.

B. small in size.

C. exactly identical.

D. only physically different.

The excessive use of species for economic value A. Disruption of habitat B. Eutrophication C. Acid precipitation D. Overexploitation

If there are 1000 units of energy available at the producer level of this energy pyramid how much energy will be passed to the primary consumers

What is the basis for scientific explanation

What makes MSA growth media selective for Gram

Originally, the earth probably had this type of environment:

3) Amphibians hatch out of their eggs with: A lungs and develop gills later. B lungs and keep them their whole lives. C gills and develop lungs later. D All of the above.

Who discovered what in photosynthesis?

How does the water cycle play a role in the rock cycle?

True or false:a plant or animal offspring is guaranteed to survive and reproduce

Describe the factor that affect blood pressure