A.) organisms within a population must have some genetic variation.
B.) there must be more male organisms than female organisms.
C.) all of the organisms within a population must be exactly the same.
D.) one population must become extinct so another can be created.
A. organisms within a population must have some genetic variation.
B. The respiratory and circulatory systems
C. The digestive and circulatory systems
D. The circulatory and excretory systems
The answer is B. The respiratory system and circulatory system.
During cellular respiration, cells use oxygen to oxidize glucose. Oxidation of glucose releases energy and carbon dioxide. Carbon dioxide is a waste product. It must be removed from cells. With help of circulatory system, carbon dioxide is transported through the blood from the cells to the lungs. Lungs are the part of respiratory system, from there carbon dioxide is expelled out via trachea and nostrils.
B. to find out if prokaryotes have genetic information
C. to find out if DNA carries genetic information
D. to find out if the protists evolved from the eukaryote
The answer you are looking for is true.