In one species of bird, there are three varieties of feather color. What is this an example of?

According to this passage, Dr. Du Bois supported the women's suffrage movement. What does suffrage mean?

What is the components of RNA and DNA

What is the effect of returning nuclear reactor cooling water back into bodies of water. Select all that apply 1. Warmth water adds energy that is beneficial for fish 2.

How many different kinds of stem cells are there?

Living in the ocean surrounded by water, most marine mollusks have which type of reproduction? a. External fertilization b. Internal fertilization c. Self-fertilization d. Hermaphroditism

Which structure does this organism use for movement? a. cilia b. contractile vacuole c. flagella d. pseudopodia?

How does cell division differ in plant cells and animal cells?

Air pollution can be controlled by A.) permitting more storm runoff B.). Burning more coal C.). Eliminating sewage D.) putting scrubbers on power plants

consider the structure and function of fats to predict which animal would have more fat: one that live close to the poles or one that lives close to the equator?

What does the electrochemical communication do in the body?