If I am not wrong, I believe the answer is Producers. The reason as to why I say that producers is the answer is because in every food chain, there needs to be a base. That base is what provides the starting energy that will later on move up in the food chain.
Tendonitis affects homeostasis by posing a huge health problem such as Mechanical stress.
The thickness of the uterine lining , becomes very thick...because when the level of hormone progesterone reaches its highest levels. according to Dr.X on yahoo answers.
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The fact or state of being engrossed within something.
or
the process or action by which one thing that absorbs or it is absorbed by something else.
c.Stomata are generally open during the day to remove excess water from the planet and closed at night to keep oxygen from escaping.
