D) DNA.
Hope this helps!
-Payshence xoxo
Yes, there is a relationship between heart rate and blood flow.
<u>Explanation:</u>
The relation ship between the heart rate and blood flow is that with the increase in heart rate, the flow of the blood also increases but the increase in the flow of the blood is not as fast as the rate of beating of heart increases in comparsion.
Even though the heart is beating more times in a minute, healthy blood vessels get larger amount of blood to flow in an easier way when heart beat gets faster.
Smallpox- began Africa, spread through trade and human interaction.
Chestnut blight-isn't this a chestnut found in America?
It was designed in France in 1791. This is not an advantage!
One cause of the Love Canal crisis was the U.S. Army dumping hazardous waste and local cities dumping municipal waste.
<h3>What lead to the
Love Canal crisis?</h3>
The explosion is known to be one that was influence by a record of large amount of rainfall.
So therefore, One cause of the Love Canal crisis was the U.S. Army dumping hazardous waste.
Note that the canal was made into a kind of municipal and industrial chemical dumpsite.
Learn more about Love Canal crisis from
brainly.com/question/373700
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