How is cellular respiration an example of a biochemical process, or a chemical reaction that occurs in living organisms?

In the diagram below, the northern hemisphere would be in what season at position a a. fall b. winter c. summer d. spring

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the traits of color blindness. the only unknown is the father in the generation.