The answers are
1.rising water temperatures.
2. land-based pollutants.
3. overfishing.
Hope I helped,
Ms. Weasley<span>
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The statement is false. Scientists perform experiments to confirm or disprove what they already know and to learn more.
The two most important pancreatic hormones which regulate blood glucose levels are INSULIN and GLUCAGON.
INSULIN is released in response to elevated blood glucose levels (hyperglycemia), which effectively reduces the blood glucose level.
GLUCAGON is released in response to reduced blood glucose levels (hypoglycemia), which effectively raises the blood glucose level.
Answer:
Scientists believe that the different types we know emerged as early humans adapted to infectious diseases.
Explanation:
Different human blood types probably emerged to ward off infectious diseases. The incompatibility of some blood types, however, is only an "accident" of evolution. But this is a relatively recent problem, since blood transfusion has been around for only a few hundred years.
There are four main blood types. The oldest is B, which must have originated about 3.5 million years ago - it existed even before the human species evolved from its hominid ancestors, from a genetic mutation that modified one of the sugars in the surface of red blood cells.
Approximately 2.5 million years ago, mutations inactivated sugar, resulting in type O blood, which has neither type A nor B. sugar. AB blood, as it is easy to suppose, is covered by both sugar A and sugar by B.
Viral infection involves a large number of protein protein interactions (PPls) between virus and its host. These interactions rage from the initial binding of viral coat proteins to host membrane receptor to the hijacking the host transcription machinery by viral proteins.
