Universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago.
<span>A person is able to squeeze a clothespin more times if they exercise beforehand because many body systems have been activated during the prior exercise. The respiratory system is activated providing increased oxygen to brain and other muscles. The circulatory system is activated to move blood from lungs and brain to the proper muscles. The brain has been activated to a mechanical task such as muscle movement.</span>
Enzymes are made of strings of amino acids chemically bonded to one another. These bonds give each enzyme a unique structure, which determines its function. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids. Amino acids are joined together by peptides, which are broken by proteases.
B, I think is the answer. Hope it helps :)
