The answer is a because without them our veins would be dead
The inability to achieve and maintain an erection is called Impotence or erectile dysfunction whilst a person who has low sperm count with the inability that to achieve a successful pregnancy or physical inability to ejaculate semen from the body is called infertility.
Explanation/Answer :Blood moves continuously through the body, delivering oxygen and other materials to cells and removing carbon dioxide and other wastes from cells.
Answer:
Fibroblasts are the most common cell type of connective tissue. They produce both fibers and amorphous ground substance. Typically only the oval nuclei are visible. ... In the tendon, fibroblasts are seen as elongate nuclei found sandwiched between collagen fibers .
Answer:
It is D= detergents is the correct answer
