Answer:
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Offset sexual reproductions
The protease enzyme pepsin is found in the stomach and has a highly acidic PH of just 2, so the line would be at PH 2, so lower down than amylase which has a PH 7 :)
The similarity between petroleum and coal is that they are both fossil fuels, which means they are formed from dead organic matter. the different between them is that coal contains carbon in its pure form, while petroleum and natural gas are hydrocarbons formed during the decaying process. Also coal is the remain of trees, ferns, and other plants that lived million of years ago while petroleum is the remains of millions of tiny plants and animals that lived in the sea.
