An electron is negatively charged and found where?

An electron has a negative charge and is found inside the atom, orbiting around the atomic nucleus.

Explanation:

Electron is an elementary particle and one of the main components of the atom, together with protons and neutrons. Being a part of the atom, it is considered a subatomic particle that, unlike protons and neutrons, is found around the atomic nucleus.

It has been established that the electron's charge is negative, whose presence or absence can confer an electrical charge to a chemical element or molecule, allowing interactions with other elements and molecules.

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.