What two factors explain why topsoil is lost?

Mitochondrial DNA is different from nuclear DNA because a) it is inherited only from the mother b) It is inherited only from the father c) It is double helix in shape d) It is not useful in forensic science

Photolysis is a part of which cycle?

Compared with the walls of arteries, the walls of capillaries. A. are thicker B. are thinner C. lack valves D. have more resistance

What organisms are usually the first pioneer species on the scene after new land has formed?

Explain how organisms, including humans, use natural resources.

Which is a nonliving thing because it is not able to reproduce? a. bacteria b. cactus c. snake d. dust

Give examples of a property that depends on both heritage and environment

What is a reaction to tissue damage caused by injury or infection?

Where do the three steps of cellular respiration occur?

The smallest and most exclusive grouping