<span>The double helix of dna is which level of structure? a.Primary
</span>
I think calcium but i could be wrong
Answer:
Immunity to Small Pox
Explanation:
Over the years, Europeans had built up an immunity to smallpox because many had contracted the disease and still survived. As the population grew children were born with some immunity to the disease. When the Europeans arrived in the Americas, and smallpox spread around the native peoples, the Europeans did not contract the disease because they were immune. However, since the natives were not immune, they slowly died of due just to the disease as well as some parts of the war between the europeans.
In a scientific experiment, a VARIABLE changed is any factor that can change or be
It controls all the involuntary actions like digestion and beating of our heart
