Answer:
Many organisms that lived in the past are now extinct .
Explanation:
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Large fields to be cleared, plowed, and planted with a single crop year after year.
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It expanded slowly - False
It gradually warmed - False
Stars and galaxies formed - True
Atoms such as hydrogen and helium formed - True
It was no bigger than the head of a pin before it exploded - True
Answer:
Lipid insoluble hormones/Peptide hormones
Explanation:
Hormones produce their effect by binding to speific receptor. These receptors may be intracellular or membranal.
Membrane receptors;
The lipid insoluble hormones cannot cross the plasma membrane thus their receptors are found on plasma membrane. These are usually peptide hormones.
Examples; Insulin.
Intracellular receptors;
The lipid soluble hormones can cross the plasma membrane thus their receptors are found in cytoplasm. These are usually steroidal hormones.
Example; Testosterone.
