(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) carbon, oxygen, and water

(B)copper, cadmium, and carbon  

(C) potassium, phosphorus, and nitrogen 

(D)boron, zinc, and manganese    

(A) radioisotopes

(B)synergists

(C)stimulants

(D)endocrine disrupters

(A) Greenhouse effect

(B)Nothing

(C)Great fishing

(D)Eutrophication

(A)  that is where the rain falls

(B)it is the warmest

(C) it is where most organic matter is found

(D) it is the coolest

(A) building up of soil

(B)movement of soil

(C)harvesting of crops

(D)heavy rainfall

(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) It accumulates in the tissues and caused infertility in the females.

(B)It causes cancer in the adult birds and a high percentage of them die from it.

(C) It causes the females to lay eggs with very thin shells that break during the incubation period killing the chicks.

(D)The chicks are missing a “tooth” that enabled them to break the shell. They die because they cannot get out of the shell.

(A) entering of polluted water to the water table

(B)the construction of polluted water

(C)the construction of well.

(D)construction of bore wells

(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