Which of the following resulted from a genetic variation that was favored by natural selection?

A. cancer in a lab rat

B. the long neck of a giraffe

C. the small size of a Chihuahua

D. smoothness of a river rock

Reasons why there wasn't any predators I. The Galapagos island

How many protons are in Cesium-135 (Cs) ?

The nurse encourages the client to maintain a steady weight in the recommended range to decrease risk of the most common endocrine disease observed in the elderly, which is: a. Hypothyroidism b. Hyperthyroidism c. Diabetes mellitus d.

The biological sequestering of a substance at a higher concentration than that at which it occurs in the surrounding environment or medium is known a?

Which kind of factors are light, temperature, and soil composition? A. ecological B. habitat C. biotic D. abiotic

Which is not a characteristic of amniotic sac

What does the nucleus of a human lymphocyte contain? A. Only the genes to produce a specific antigen B. Only the genes to produce a range of antibodies C. Only the genes that control the growth and development of a lymphocyte D.

What is the functions for chloroplast

How do inbreeding and hybridization compare

A species of gray wolf was eliminated from a national park because of unrestricted hunting. As a result, there was a tremendous increase in the population of its prey, the elk. The populations of other herbivores also increased.