Answer:
Vitamin d comes from mainly plants, but vitamin d3 comes from animal resources. Vitamin d3 is made when sunlight strikes the skin.
Making of faces - this is the correct answer in this case because the movement of either food or blood or beating of the heart for that case don't involve voluntary muscle movement. On the other hand, when're making faces, we're deliberately deciding whether we want to make a face and what face we want to make. hope this helps :)
Characteristics of human hair such as length, curliness, density, and color are some of the different factors in classifying human hair. Hair can also be classified as to where it grows (such as terminal and vellus hair), and when it grows (like lanugo hair for infants in the womb).
It was Mr. Robert Remak who discoved that new cells are formed from the pre –existing cells. Later on Mr. Rudolf Virchow was the first to accept Mr. Robert’s concept of cell theory and their emergence. Remak found this theory when he was observing red blood cells (RBCs) in the embryo of chicken at all stages of division.
