An allele is made primarily of which kind of compounds?

A.

RNA

B.

DNA

C.

proteins

D.

lipid

Just a few hours after the birth of a baby, the mammary glands start producing milk. Which hormone stimulates this event? A.) Prolactin B.) Estrogen C.) Progesterone

What has uekaryotik cells liver, virus, oak, lactobacillus?

In ecological terms, disturbance is an event such as a storm, fire, or human activity that changes a community, removing organisms and altering resource availability. Which of the following statements about the effects of disturbance is correct?

The water cycle consists of some water evaporating from the surfaces of bodies of water and going into the air. As result of air temperatures, water vapor eventually condenses and falls as rain.

Which could be classified as part of an ecosystem but not part of a community? A. trees B. grasses C. bacteria D. minerals

Explain why resource availability and allocation are an important concern for governments.

Which processes happen in the kidney? Select three options.

A student claims that cellular respiration is essential to cells so that they have a means for getting rid of excess carbon dioxide. What is wrong with his statement?

When and where was the possibility of growing thornless varieties of plants discovered?

Describe Andesitic Lava: What is it's viscosity and what is it mostly composed of?