Answer:
Simply by the changing of the DNA.
Explanation:
Meiosis is the process where a cell with 2n chromosomes divide to produce 4 new cells with n number of chromosomes each with different genotypes which is how single-celled organisms reproduce and reproductive cells divide. This creates different genetic combinations therefore supporting diversity and natural selection.
Crossing Over is a procedure that is a part of the meiosis. It is when the chromosomes are replicated and at a total of 4n, the homologous pairs of the chromosomes have a cross-over of DNA, resulting in genetic diversity.
Mutations, even though they are harmful most of the time, are also a process where genetic diversion accours because of either mistakes in the cell divisons or external effects such as radiation. Therefore mutations are also contributing to the allele diversity.
I hope this answer helps.
Not including the variety generated by crossing over, 16
Answer:
When carbon dioxide dissolves in seawater, the water becomes more acidic and the ocean’s pH (a measure of how acidic or basic the ocean is) drops. Even though the ocean is immense, enough carbon dioxide can have a major impact. In the past 200 years alone, ocean water has become 30 percent more acidic, faster than any known change in ocean chemistry in the last 50 million years.
Explanation:
The best answer would be "research reasons why species change over long periods of time"
if not i apologize but this is my best guess<span />