Answer:
b. Eustachian tubes is correct
Explanation:
A substance that modifies the transition state to lower the activation energy is termed a catalyst; a catalyst composed only of protein and (if applicable) small molecule cofactors is termed an enzyme. It is important to note that a catalyst increases the rate of reaction without being consumed by it.
The answer is C.<span>The shell protects the crab from predators</span>
<span>a form of natural selection in which individuals within certain inherited characteristics are more likely than others to obtain mates.</span><span>all the alleles for all the loci in all individuals of a population
</span>
Answer: The arrangement of these nitrogen bases contains the code for
genetic traits. These bases are arranged in a particular
sequence, such as TGCATTCA. The sequences of DNA can vary
from several hundred bases to a million or more bases.
Explanation: put this and my teacher said amazing