There are four main stages in the water cycle. They are evaporation, condensation, precipitation and collection
Answer:
Explanation:I know Th at one of the reasons is that they would look at the sun to tell time.
The male produces the what ever it’s called
Answer:
PVR is calculated by the formulae: 
Explanation:
Pulmonary vascular resistance may be defined as the resistance to blood through the pulmonary circulation.
PVR can be determined by the following formula:

Here, PAP is the pulmonary artery pressure, PAOP is pulmonary artery occlusion pressure and CO is cardiac output.
1. B. A process in which electrons are transferred from one compound to another with a release of energy occurring in the production of ATP
2. A. The gel-like material within a living cell
3. D. An organic molecule that occurs as an intermediate in many metabolic processes
4. C. The chemical breakdown of a substance