Answer:
prokaryotic because it lack nucleus
The correct answer would be C. Polluting a river is an example of a human activity that is harming a renewable resource. Renewable resources are resources that are not depleted with time. They are replaced naturally and repeatedly. Examples of these resources are water, oxygen, biomass and solar energy.
Answer:
An experiment in which only one variable is manipulated at a time is called a <u>controlled</u> experiment.
Explanation:
Calcium channel blockers inhibit the movement of calcium ions from the interstitial fluid into cardiac and smooth muscle cells. This would cause a decrease in heart rate, stroke volume, and cardiac output. These in turn would lower blood pressure. In addition, the calcium channel blockers would also inhibit contraction of the smooth muscle in the wall of blood vessels, causing them to get wider and thus also lower blood pressure. Because both heart and smooth muscle cells are inhibited by verapamil, its effects on blood pressure are particularly potent.
They live in the anoxic muds of marshes and at the bottom of the ocean, and even thrive in petroleum deposits deep underground.
