How does agriculture cause water pollution?
A. pesticides and chemicals runoff into
waterways
B. pesticides are released into the air
C. burning crops release pollutants into the
air

A. pesticides and chemicals runoff into waterways

Explanation:

Its a fact and so.

In B. pesticides can cause air pollution by releasing harmful gas but does not affect water in anyway.

C. same as B. it does not cause water pollution but more likely to cause air pollution.

In A. when excess pesticides run away because of rain water falling on the soil and reaches to river to cause water pollution.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .