In which structures does gas exchange occur?

Which of these is a common characteristic of cnidarians? A. They have four legs. B. They have tentacles with stinging cells. C. They live only in the oceans. D. They live only at the surface of the water.

During an ice age, the Earth's oceans a. all freeze c. fall b. raise d. none of the above

The fact that b cells and t cells are both clonally selected means that each b cell or t cell produces only one kind of antibody. there are five different types of immunoglobulin.

B represents the dominant allele for brown fur and b represents the allele for white fur what are the possible genotypes for offspring of rabbits with the genotypes BB and bb answers

What is composed of amino acids and determines all the structures and functions of organisms

It is important for us to keep our water supply clean and chemically balanced, so that it is potable and we can drink it. Having the right pH level is a part of this. What pH level should drinking water have? A) 1 B) 3 C) 7 D) 10

Compare the chromosomes of the parent and offspring in asexual reproduction

What pattern of population growth corresponds to the principle of a carrying capacity? what pattern of population growth corresponds to the principle of a carrying capacity? logistic a straight line j-shaped bell-shaped?

How do prokaryotic cells get energy?

What is the genotype of a homozygous tall plant