The ear canal a ear drum normally contain fluid
The disorder that he might be at risk of experiencing schizophrenia. This is a mental disorder which usually appears in late adolescence or early adulthood. Normally characterized by hallucinations, delusions, and other cognitive difficulties. This condition affects how a person thinks, feels and behaves, although not common as compared to other disorders it can be very disabling and a lifelong struggle.
Plants on Earth provide food, some even provide shelter to some animals, and plants such as trees provide oxygen to the environment.
The answer would be D, 7 hours of sleep
It is caused by the atmosphere of the Earth. It is due of the scattering of light by the atmosphere. When the moon is near the horizon, the moonlight must pass through much more atmosphere than when the moon is directly overhead.