Reading background information because it gives ideas from the author himself.
the answer would be true because you eat more toxins the higher you go
They are well at surviving because of their thick white coat. The white fur helps them blend in with the snow and ice. The polar bear also has a layer of fat under their skin so they can survive harsh temperatures.
Answer:
Blood sugar regulating mechanism is operated through liver and muscle by the influence of the pancreatic hormones- insulin and glucagon.
Explanation:
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