The alveoli. These little air sacs are found on the end of the bronchioles and are the place where oxygen enters the blood and the carbon dioxide leaves.
Most enzymes do in fact work on a single substrate in most cases, this is because of the enzyme - substrate specificity. Certain reactant molecules acting as substrates can only fit in the "lock" of particular enzymes and undergo a conformational change and result in Unique products to be released after the reaction has occurred.
D) orbit the nucleus like the planets orbit the sun.
this idea was first proposed in the rutherford model:)
D. Frederick Taylor because I learned it in class today and I searched it up
Answer:
primary succession only occurs on bare rock
Explanation:
