Quite sure C is correct ;) remember that humans are also placental mammals.
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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<span>Light energy has to be converted into chemical energy in ATP molecules. Plants change light into sugar molecules and both plants and animals change sugar into ATP molecules, which allows for our survival</span>
Why people shouldn't be sent to Mars?
Answer:
and the other questions you have the arm to