In a vegan breakfast consisting of raisin bran cereal with soy milk and a glass of orange juice, the vitamin c in the orange juice will enhance the absorption of

It will enhance the absorption of the calcium and iron present in the cereal.

Explanation:

Note that , a person is referred to as a vegan when he/she neither eats meats nor uses animal products like leather bags, shoes, clothes, and does not eat products like cheese, milk, egg e.t.c.

A vegetarian is different from a vegan because, a vegetarian might not be eating animals truly, but they may eat products from the animals, such as milk, egg, cheese and so on.

the first question's answer is a.

answer; a variety of simple organic compounds could be spontaneously synthesized from components in earths primitive atmosphere;