Sometimes a mutation is beneficial to an organism’s fitness and can be passed on to offspring. what is likely to happen to the mutation over many generations?
any genetic variation will not persist because the mutation is a one-time event.
there is a random chance of the mutation spreading to other individuals in the population.
the mutation will become more common in offspring and increase the genetic variability in the gene pool.
genetic recombination is the only way that variations can be passed on, so the mutation will die out.
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The mutation will become more common in offspring and increase the genetic variability in the gene pool.

Explanation:

If the mutation is beneficial to the organism and this organism breeds its offspring may carry this gene, if it´s really beneficial and for example makes an organism to have more access to females the mutation may spread faster.

The only way for a mutation to spread to other organisms is reproduction (eukaryotes)

A mutation may also spread to other organisms in prokaryotes in which bacteria may take plasmids (DNA fragments) from the environment.

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.