The answer can be pollination or cross-pollination.
All carbohydrates are made up of carbon, oxygen, and hydrogen.
The chemical formula for Glucose is
.
The chemical formula for Fructose is the same as that of Glucose. The difference between the two is how they are structured.
The chemical formula for Sucrose is
.
As you can see in the chemical formulas of Glucose, Fructose, and Sucrose, they are all made up of the elements carbon, hydrogen, and oxygen.
C. In anaerobic exercise muscles do not use oxygen. In aerobic exercise muscle use oxygen.