One way to increase the number of organisms in an endangered species is to let the few remaining individuals of that species breed however this breeding may also lead to species extinction because inbreeding over a short period of time may reduce

genetic diversity within a population

Explanation:

In research, it was found that a small population in the wild has increased extinction chances because in a small population the breeding between close relatives takes place which is called inbreeding.

This inbreeding reduces reproductive success in the population and reduce the genetic diversity in the population. By inbreeding homozygosity chances increases which can result in increasing the amount of deleterious and recessive traits in offsprings that can result in the extinction of species.

plant because they survive by water, sunlight, ex.

explanation:

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.