What is diffusion and what are the factors that affect it

The structural differences between a tadpole and an adult frog are due to

The Earth would be much better off if greenhouse gases did not exist. True or False

Storing genetic information is done by

Which of the following statements about DNA are true? (A) The bases are located inside the helix formed from two polynucleotide strands. (B) The grooves all have the same dimensions. (C) The two strands run in the same direction.

What is the correct chromosomal condition at prometaphase of mitosis?

A group of cells working together is known as what

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