Physical dependence on caffeine has not been demonstrated.

The figures displayed on the figure above will vary based upon local or regional conditions.  For example, in some locations more insolation may be scattered or absorbed due to heavy cloud coverage.

If you are located at 35 north latitude, you will experience a situation where the sun is directly overhead (at 90 degrees) twice a year.

A hot object such as the sun releases a greater amount of energy that is concentrated along the short end of the electromagnetic spectrum.

Alpha motor neurons form connections with muscle fibers at the _____.

The _________ is the layer of the atmosphere where weather events occur.

Animals in cold climates have typically have _____.

Approximately h ow many ganglion cells does the human eye have?

Age-related loss in muscle mass appears to begin around the age of _________.

ADH or vasopressin controls the retention of fluid, while aldosterone controls the retention of sodium.