The correct answer would be
C.) <span>Polio Vaccination.</span>
Answer:
ribosomes
Explanation:
thye produce the things needed for the cell membrane
Not sure what the choices are but a biotic factor is anything living.
Answer:
Myelin sheath
Explanation:
Myelin sheath cover the axon of neurons and act as insulator for the faster transmission of signals.
Each axon is covered by multiple myelin sheaths and the gap between myelin sheath are known as Nodes of Ranvier.
In CNS myelin sheath is composed of glial cell called as oligodendrocytes and in PNS the myelin sheath is composed of Sachwann cells (glial cells).
Answer:
Evolution is a scientific theory used by biologists. It explains how living things change over a long time, and how they have come to be the way they are. ... It is known that living things have changed over time, because their remains can be seen in the rocks. These remains are called 'fossils'.
