Whats the best reflector of heat energy
a. gritty navy blue surface
b. bumpy red surface
c. dull orange surface
d. polished pale yellow surfacr

the core of the sun is so hot and there is so much pressure, nuclear fusion takes place, hydrogen is changed to helium. nuclear fusion creates heat and photons. when the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

acceleration = 18/3 = 6 m/s per second.

hope i

-lavira: )

i think the answer is composed of atoms