The growth of plants and formation of land mammals characterized the paleozoic era.
The myelin sheath is the protective layer, which is present in the outer layer of the neural cells. This myelin sheath prevents the loss of electrical impulses, which are being conducted in the neurons. This also act as an insulator between neuron and its external environment.
This layer is mainly made up of the protein and fatty substance. The degeneration of the myelin sheath result in many neurological disorders.
Hence, the correct answer is myelin sheath.
I believe a valley or mountain, but I am not 100 percent sure.
Yoyr muscles will switch to anaerobic respiration and produce lactic acid
Answer: 0
All of the boxes have a big R in them which means the that gene is present. (I can’t remember exact terminology, so this is kinda a simplified explanation, hope it helped)