(A) Children are more susceptible to pesticides because they weigh substantially less than adults.

(B)Lethal doses of pesticides are larger for children than for adults.

(C)Children are more sensitive to pesticides than adults because adults have built up immunity to the pesticide chemicals.

(D)Children have more stringent pesticide regulations to protect their health than do adults.

(A)

 Heavy rainfall (from a single storm) in an area of low average annual rainfall.

(B)

Steep slopes in a tropical rainforest.

(C)

An agricultural region where soil conservation practices are implemented.

(D)

An area that has been urbanized for several decades or more.

(A)

Concentration

(B)

Biomagnification

(C)

Expansion

(D)

Pollution

(A) Available energy increases and pesticide concentrations increase as you move up a food chain.

(B)Available energy increases and pesticide concentrations decrease as you move up a food chain.

(C)Available energy decreases and pesticide concentrations increase as you move up a food chain.

(D)Available energy decreases and pesticide concentrations decrease as you move up a food chain.

(A) Greenhouse effect

(B)Nothing

(C)Great fishing

(D)Eutrophication

(A) building up of soil.

(B)movement of soil.

(C)harvesting of crops.

(D)heavy rainfall.

(A) DDT

(B) CFC

(C)Radioactive substances

(D) PAN

(A)

Cholera

(B)

Typhoid

(C)

Cryptosporidiosis

(D)

Malaria

(A)

Radioisotopes

(B)

Synergists

(C)

Stimulants

(D)

Endocrine disruptors

(A) Gases escaping the earth

(B)Particles reflected off the moon

(C)Particles given off by the sun

(D)Radiation from earth's magnetic field