It was pollution from the industrial revolution that caused tree trunks to turn from light to dark in color.
Answer:
The carbon cycle plays a key role in regulating Earth's global temperature and climate by controlling the amount of carbon dioxide in the atmosphere. The greenhouse effect itself is a naturally occurring phenomenon that makes Earth warm enough for life to exist...hope it helps..
The Answers are
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MAOI's work better with patients whose depression becomes more acute as the day progresses. An enzyme named monoamine oxidase is intricate in eliminating the serotonin, neurotransmitters norepinephrine and dopamine to the brain. MAOIs avoid this from happening which makes more of these brain chemicals obtainable to effect alterations in together cells and circuits that have been obstructed by depression.