Pro I
Meta I
Ana I
Telo I
Pro II
Meta II
Ana II
Telo II
<span>Unidirectional flow in the heart is ensured because the heart contains valves that prevent backflow.
These valves keep the flow of the heart going in one direction (hence the name "unidirectional").</span>
The answer is primary structure. The protein's primary structure pertains to the amino acids' linear sequence in the chain. Usually, the protein's structure is combined together with a covalent bond that is produced while the process of biosynthesis is present.
Answer:
Common examples of social issues: Poverty and Homelessness, Climate Change, Civil Rights and Racial Discrimination, etc.
Explanation:
There's so much more examples of social issues down the list, but that'll take to long, these are enough for now.
The older the rocks were the more like they were to have fossils.