I believe the correct answer is A. Increases the rate of a chemical reaction. This is because they act as catalysts.
The statement that best describes ecological succession is that it always occurs in a predictable pattern. The process is also slow. The correct answer is C.
<span>He is at an increased risk for sudden infant death. Since he is sleeping on a mattress that might inhibit his breathing, as well as having respiratory issues that might do the same (along with parents who are smoking, which will only inhibit proper respiration further), he will need to be constantly checked to make sure he is sleeping properly.</span>
