hydrocarbon is ethene which is used to test for saturation and it undergoes addition reaction
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Answer:
space
Explanation:
Matter possesses mass and occupies space around it. The space is measured using the property known as volume. Different states of matter occupy spaces in different ways depending on how big, small, rigid, flowing etc. they are. Hence, each state of matter appears a bit differently and they have different volume.
I would say B because c and d would decrease competition and a would do the same, or just kill the ecosystem.
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