Lack of antibodies because thats the stuff to fight things away
The answer would be D. Because the mitochondria has the energy ATP and is synthesized during cellular respiration.
The Cambrian explosion. Trilobites were found because of their hard shell, unlike soft bodied creatures.
Answer:In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.
Explanation:
