Some of the safety rules would include to tie one's hair if it is long and do roll up sleeves if needed. Another is always point the opening of the burner away from one's self and others when heating and lastly never to leave the burner unattended.
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Answer: Power plants
Explanation: They release the waste from it into the air
Cyclins are a family of proteins that control the progression of cells through the cell cycle by activating cyclin-dependent kinase (Cdk) enzymes.
So A. Is correct