What key words does the question contain and what do they mean?
What will be an ideal response?
Electron configuration – the occupancy of electrons in different shells.
Atomic number – number of protons in an atom, and thus also the number of electrons.
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A shift from expected allele frequencies, resulting from chance, is known as
(a) natural selection. (b) genetic drift. (c) mutation. (d) gene flow.
Grasses would be placed in the ________ trophic level
a. 5th b. 3rd c. 4th d. 1st e. 2nd
Bilaterally symmetrical animals
A. have right and left sides when cut longitudinally. B. tend to exhibit cephalization. C. tend to be active and move forward. D. All of the choices are correct.
The main byproduct of photosynthesis that is essential to most life forms is
A. glucose. B. carbon dioxide. C. chlorophyll. D. oxygen. E. sunlight.