Which of the following is not a characteristic of life?
a.) maintains homeostasis
b.) composed of cells
c.) composed of atoms
d.) carries out metabolism

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.