Select each correct answer. More than one answer may be correct. Which of the following are main tenets of Darwin's theory of natural selection?
Traits acquired during an individual's lifetime are heritable.
Individuals compete for resources.
The traits within a population vary and are heritable.
Individuals can produce more offspring than can survive.
Individuals most adapted to their environments have a better chance of surviving to reproduce.

in a word, a scientific question is testable. a testable question is one that asks about objects, organisms or events found in the world around it

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

the answer would be..

b. sucking

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

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bioteacher101