Answer:
when the production produces or makes commercials for marketing
B) the decay of once-living things
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The atoms and molecules produced by the reaction are called products. This causes the atoms to be rearranged into new substances.
The answer:
An atom's ability to undergo chemical reactions is determined by its outermost electrons.
Cells are combined in a structure called tissue wich have the same properties like the cells wich are formed by.
Respiratory- You breath faster to help supply the muscles with more oxygen.
Integumentary (skin) - Sweat helps cool down the body.