A person jumps off when he steps on the soft loose things on knowingly​

Because dendrites present in legs detect stimulous change in electrical impulses. When it is carried my afferent neurons impulse goes inside Dorsal Root ganglia. There is synapse in spinal cord. Integration takes place and impulse is carried by motor neurons to effector organ i. e legs and he/she jumps suddenly.

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.

mammal

explanation: