A mutualistic and A a decrease in the number of corals
Gases released from improperly maintained compost piles are a negative effect associated with the composting process. ... The release of methane and carbon dioxide contributes to the problem of greenhouse gases in the atmosphere. Poorly operated composting facilities also cause unpleasant odors.
Prokaryotic cells doesn't have a nucleus.
These structures are called Vestigial structures, they resemble structures from the organism's ancestors, but don't have a real purpose for them now.
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