<span>it can form four covalent bonds it forms very strong bonds</span>
Answer: A.
Explanation: Scientists think that geographic isolation is a common way for the process of speciation to begin: rivers change course, mountains rise, continents drift, organisms migrate, and what was once a continuous population is divided into two or more smaller populations.
Answer:
C
Explanation:
Sex-linked diseases passes down from one generation for another.
Answer:
b.
Explanation:
It behaves like an insulator.
Is it meiosis??
Because mitosis only undergoes one round of division resulting in 2 daughter cells {which are identical}
-To produce 4 daughter cells (haploid)
Cells undergoing mitosis just divide once because they are forming two new genetically identical cells where as in meiosis cells require two sets of division because they need to make the cell a haploid cell which only has half of the total number of chromosomes