100 points two questions please help quick

What is the importantence of the carbon and nitretan cycles in the environment

Whats one way that rocks do not follow the typical rock cycle pathway?

Urgent. the table shows the relative blood flow through some organs in the human body that is, the percentage of blood that flows through a given organ, through which organ(s) does all the blood flow? explain the effect of exercise on blood flow to skeletal muscles.