A genetic mutation causes a snake to have brown skin. After many generations, most of the snake population has the brown skin mutation.
Which of the following most likely caused this change?

A) The other snakes changed their colors to mimic the brown snake.
B) All the snakes in the area were infected with the mutation.
C) Snakes with the brown skin mutation are able to survive and reproduce more successfully than snakes without it.
D) The same mutation occurred in other snakes in response to environmental conditions.

a. by using fur or clothes to trap heat energy near the body

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this