Answer:
A. an increase in the greenhouse effect
Explanation:
Carbon dioxide controls the amount of water vapor in the atmosphere and thus the size of the greenhouse effect.
Answer:
carries the genetic information copied from DNA in the form of a series of three-base code “words,” each of which specifies a particular amino acid.
The correct answer is a dichotomous key. Basically, you use the key to decide what species an organism is by looking at what traits it has, and if it doesn't have some traits you can instantly rule out a large number of species which brings you closer to your answer of what the species is that you're looking at.
<span>"they form a cyst: a hard covering is formed around the protozoan and metabolic rate is slowed"</span>
