4. Electrons move in (1) , and (2) consists of elections in orbitals at the same principal’s energy level. (1) Electron orbitals Principal energy levels An electron shells (2) An electron shell A valence shell An electron shell 10. A buffer maintains a Ph that is which of the following? a. Basic b. Acidic c. Consistent d. Neutral * I think its C.

cats appear to have glowing cat eyes because the back of their eyeballs includes a special reflective surface called the tapetum lucidum. this lets them see better during the night, giving them a much better vision.

answer; hypnagogic sensations)

biology is the study of life. it is the study of living organism.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.