How does lead get into water?
a-it is released into waterways with industrial waste
b-it is a byproduct of detergents interacting with organic matter
c-it occurs naturally in water
d-it leaches into water as old pipes corrode

which part of the government has authority to enforce the clean water act?
a-president
b-congress
c-the environmental protection agency
d-u. s. forest services

which of the following water supplies would be affected directly by groundwater contamination?
a-wells
b-lakes
c-streams
d-rivers

what role do bacteria play in an aquaponics system?
a-they transform fish waste into food
b-they enrich the water to fish grow
c- they break down dead plant matter
d-they warn that the fish are sick

Lead can get into drinking water by entering a drinking water supply or from lead- containing piping, home plumbing or fixtures. Contamination of source water can occur due to discharge from industries that burn fossil fuels, mine, smelt, and manufacture.

that said i would go with A, or D on number one

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.