When you straighten your arm or leg (as in a pushing movement), you EXTEND the arm or leg. When you bend your arm at the elbow or your leg at the knee, you FLEX the arm at the elbow and flex the leg at the knee.
Answer:
absence
Explanation:
anaerobic microbes grow best in an environment without oxygen because they adapted to create energy without oxygen. the answer is in the word "anaerobic" because the prefix "an-" means "without" and the suffix "aerobic" means "oxygen.
together, anaerobic means "without oxygen"
I think the boomer generation
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~LeviOsa
Answer:
Depression
Explanation:
Depression is usually linked to an under-supply of serotonin because serotonin is consider the "happy" endorphin
