Which of the following human activities would be expected to be the biggest contributor to air pollution?

a.

driving

b.

restaurant garbage

c.

aerosol cans

d.

nuclear weapons

What percent of the trees cut down are used for something other than paper? a. 35% b. 45% c. 55% d. 65%?

Genetic variation, provided through sexual reproduction, offers more opportunity for offspring to survive in changing environments. What two aspects of meiosis provide sources of such variation? A. Mutation and fertilizationB.

What happens if the body is unable to maintain its blood glucose levels? The body adapts to a different blood glucose level. This regulation is unnecessary to the viability of organisms. Diseases, such as diabetes and hypoglycemia, result.

Which organisms gathers its energy directly from the sun

The synthesis (s) phase is characterized by

Why are elements and compounds classified as pure substances?

What is independent assortment?

Sulfur trioxide is a covalent compound. Which is the chemical formula for sulfur trioxide? A. SO3 B. (SO) 3 C. S3O D. S3O3

What is the polymer of lipids

Suppose you look at a microscope to look at a cell from leaf of a tree. What structure will you see that would not be found in a cell from you finger nail. A) cilia B) mitochondria C) ribosomes D) chloroplasts