B. New substances are formed. In a chemical reaction, the starting molecule must be changed or turn into another. For example: rusts that form in a tin can is a chemical reaction. The iron in the can combines with the oxygen in the atmosphere, creating rust (iron oxide), which is a different substance.
Answer:
dopamine
Explanation:When you take a substance your releseses dopamine and over time you need more stimulant to keep your brain satisfied hope this helps god bless
The predator numbers for the deer will start to drop, due to a lack of food available. The vegetation that deer eat will increase, due to a lack of deer to eat it & so it will thrive untamed. This may cause certain animals to thrive & increase their respective predator counts & so on.
Explanation:
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