What is the best way to save a species? 1.To protect the prey
2.To save its habitat
3.To protect the plants in the area
4.To save a mating pair

to save a mating pair or pairs

Explanation:

if the species are about to go extinct it is reliable for the pairs to procreate

To save a mating pair.

Explanation:

Saving a mating pair is the smartest way to save a species since they will reproduce and their offspring will also reproduce, making the chain grown again.

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

the answer to your question is tooth decay.