Carbon is an essential atom in many organic molecules. Why is it so useful? (1 point) O It has an empty outer shell of electrons, allowing it to accept electrons from a larger number of atoms.
O It has a half-full outer shell of electrons, allowing it to form a wide variety of bonds.
O It has a full outer shell of electrons, so it does not need electrons from other atoms.
O It has an almost full outer shell of electrons, meaning that it is has a greater tendency to bond with other atoms.
Check Answer
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It has a half-full outer shell of electrons, allowing it to form a wide variety of bonds.

Explanation:

Cabon has 6 electrons (2 in 1s/2 in 2s/2 in 2p).

Octet rule states that atoms want to have full 8 valence electrons by bonding or giving electrons.

Carbon is essential, because it has 4 valence electron(half-full outer shell), allowing the carbon to bond with up to 4 other atoms and have these long chains that are backbone to organic molecules

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

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.