The answer is the second choice: variation, overpopulation, adaptation
They help form D organ system which is the
digestive system
Option (A) identifies them correctly.
During Meosis 2 daughter cells are formed from a single cell and the chromosomes are equally divided in both the cells.
So, Cell P had 60 chromosome, after miosis 2 daughter cells of each having 30 chromosomes formed, and again after Miosis of from each of those 2 those daughter cells, 2 more daughter cells are formed with equal naumber of chtomosome which equals 15.
A community of plants and animals that live and interact together in a particular region is called an ecosystem.
