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(Both questions 17 and 18)
EXTRA POINTS TOO

For question 18 i think the answer is (B) becasue the cell membrane is the wall of a cell and so in a bank it would be the security guard. Then for question 17 its either B or C.

Explanation:

hi,

the answer is third world countries, take for instance china, they restricted each family with only one child,

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the way that the mass of carbon can be conserved through cellular respiration is through a process/law called the law of conservation of mass which even tho it undergoes a process, mass is not be destroyed or changed