Your skin is pale, cold, and clammy. your pulse is rapid. your breathing is shallow. you feel fear. these are symptoms of

Shock

Explanation:

The victims of shock may suffer from slower circulatory and respiratory activity. The symptoms include the change in coloration of skin to pale yellow. The skin becomes cold and clammy. The pulse becomes rapid, breathing becomes shallow. This occurs due to development of fear in the patient or due to sudden injury.

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.

when it is at an intermediate population density