I think the answer is B
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Answer:
D: Black hole
Explanation:
The formation and life cycle of stars
A nebula. A star forms from massive clouds of dust and gas in space, also known as a nebula. ...
Protostar. As the mass falls together it gets hot. ...
Main sequence star. ...
Red giant star. ...
White dwarf. ...
Supernova. ...
A neutron star or black hole.
Are there any answer choices, I can’t see very clearly
Exchanging oxygen and carbondioxide between air and lungs because it just involves breathing system but everything else involves hormones.........
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Organisms that survive a new environment are said to have adapted to their surroundings.
