Insects belong to which animal phylum?
a) echinodermata.
b) annelida.
c) arthropoda.
d) reptilia.
e) chordata.

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Which type of respiration takes place when there is no oxygen present

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity