The the worst disease ever know to mankind was Black Death also known as The Plauge.
This disease spread all over Europe, even though it spread to other countries, The Plauge was mostly in Europe. It affected/killed many people of Europe's population in the 14th century. the Black Death is estimated to have killed 30–60% of Europe's total population. In total, the plague may have reduced the world population from an estimated 450 million down to 350–375 million in the 14th century.
Slows the development still do it anyways;)
Answer:
B. Diet and Nutrition im pretty sure
Explanation:
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The answer to the question stated above is pH Balance. It is letter a.
<span>Acidosis and alkalosis can occur when the excretory system fails to keep a functional: pH Balance.
</span>When the pH value of body fluids is below 7.35, the condition is called acidosis<span>, and when the pH is above 7.45, it is called </span>alkalosis.
The choices to the question given are the following:
<span>a. PH balance.
b. Skin temperature.
c. O2-to-CO2 ratio.
d. Circulation rate.</span>