The answer is D. The digestive system provides energy to your muscular system by breaking down foods and using those nutrients to create energy. It is like how when you are starving, you feel weak because you don't have energy. When you eat something you get more energy so you can move
Natural selection is the process by which evolution occurs
The gravitational pull between the two objects increase
Answer:
Anaerobes
Explanation:
Those organisms who live and reproduce in the absence of oxygen are termed as anaerobes. Those anaerobes that can not manage the presence of oxygen and harmed by even small quantity of oxygen are called obligate anaerobe, for example, <em>Clostridium botulinum</em>.
Those organisms which have the ability to grow in the absence of oxygen but utilize oxygen when oxygen is present are called facultative anaerobes for example in human intestine <em>E.coli </em>and other bacteria of Enterobacteriaceae family are facultative anaerobe.
There is one other category that contains anaerobe and called aerotolerant organisms which grow in the absence of oxygen and are tolerant towards oxygen. Therefore the correct answer is anaerobes.
<span>Cartoon or ribbon representation
Most popular form of representing proteins. Colo-coding the different secondary structure elements gives it a more refined look. But no side-chains are shown. Best for comparing overall structure of two different proteins.</span>
