Answer:
Cell
Explanation:
In anatomy, the basic structural unit of the body is the cell. All living organisms have cells, which start as the zygote — the single cell at the beginning of life, after a spermatozoa fertilizes an oocyte. In humans, the body has more than 200 different cell types.
Plasma proteins, or serum proteins. ☺️
Answer:
I think they are called threadworms
Explanation:
C. These activities are appropriate because they make the leg muscles more flexible.