When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes in biomes at different latitudes.
Fatigue can have causes that aren't due to underlying disease. Examples include lack of sleep, heavy exertion, jetlag, a large meal, or aging.
Answer:
FF | FA
-------------
FA | AA
Explanation:
F= free ear lobed male A= female with attached earlobes
FF | FA
-------------
FA | AA
Organic molecules can form in a reducing atmosphere. Good luck.
