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CO2 makes up about ________ percent of the atmosphere.

_____is the process in which one presynaptic neuron suppresses another one

Nitrogen gas in the atmosphere is converted to forms of nitrogen usable by vegetation via:

An indicator H2Ind is diprotic with pKInd1=3.8 and pKInd2 = 7.4. The colors of the related species are: H2In is blue, HIn- is red and In2- is yellow. What color would you expect to see if this indicator is added to a solution with a concentration of [H3O+] of 4.0×10-8 M?

Part b. Considering your answer in the previous question, state whether a precipitate of MF3 will form or not and type your explanation answer here. No credit without a correct explanation.

___ are responsible for photopic (day) vision as well as trichromatic (color) vision. 

Explain what a niche is

_____innervates the lateral rectus, which abducts the eye

When you view objects close to the eye, the eye makes an adjustment called 

_____innervates the lateral rectus, which abducts the eye