Hello
The percussion cap is placed over a hollow metal hole at the rear end of the gun barrel. it can be made of copper and brass
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I think it might be A or the first one
Phytoplanktons are also called microalgae. They are the foundation of the aquatic food web and the primary producers. They feed everything from microscopic to multi-ton whales. Thus, the answer to the question above is letter B. Provide basis of food chains.
Your answer is C.Calcium.
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