Answer:
B
Explanation:
unusually weak magnetic fields on the sun paired with reduced solar activity cause sunspots to disappear.
The three structures that are most likely found in all fish are: blood, fins, and gills.
Answer - Speciation
Reasoning - Pretty much what has happen was the two species has evolved over the course of evolution if you want to put it that way why the are incapable of breeding.
Genes are arranged in a linear sequence on a chromosome.