Rocks are composed of different kinds of
a) soils.
b) sands.
c) minerals.
d) water crystals.

one would be wind another would be water density

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.

a = executive branch; b = judicial branch