It's C , i'm 100% positive
Well I not a computer Genius but no well yes
Answer:
Genetic variation in a group of organisms enables some organisms to survive better than others in the environment in which they live. Organisms of even a small population can differ strikingly in terms of how well suited they are for life in a certain environment.
Explanation:
Genetic variations are important because a diverse gene pool is good for long-term survival of a species since the environment is always changing, so the diversity of DNA offers the most fit of the species a better chance of surviving because they are most adapted to the constantly changing environment.
Somone sections of ocean get more rain than others, the salinity is affected when the freshwater from rain adds to the sea water and dilutes it
