Answer:
if there is more exposure to uv radiation then skin color will be darker.
Answer:
Intracellular receptors are located within a cell and bind to molecules that cross directly through the membrane. Membrane receptors are located in the membrane, bind to molecules that cannot cross it, and transmit the signal to the cell interior by changing shape.
Explanation:
Hope This Helps! P.S I Used My Science Book For This
Answer:
The major levels of organization in the body, from the simplest to the most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism.
Some have a 30 yr life span but others have little as ten months
it all depends on the region of which it lives
