Answer:
endosymbiosis
Explanation:
The theory of endosymbiosis states that mitochondria in cells are once the descendants of aerobic prokaryotes. These prokaryotes used oxygen in order to generate energy. The mitochondria and the chloroplast are among the most important organelles that support endosymbiosis.
So many new species were being discovered, it was impossible to arrange them all in a hierarchy based on relative complexity of species.
Organ system that provides protectionfor the body and maintains homeostasis. (skin, hair, nails) Madeup of Epidermis & Dermis. Theoutermost, thin layer of skin, which contains proteins and is composed of 5 smaller layers of stratified squamous.
Bb is black fur because the dominant (always shown as the capital in this case B) is always shown when present. the red fur is a recessive trait (always shown as the lower case in this case b) and is only shown when there’s no dominant allele present
