When moving upward on an energy pyramid from one level to the next, what happens to the usable energy in an
ecosystem?
It increases by about 10%
It increases by about 90%
It decreases by about 10%
It decreases by about 90%

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x.xx ml

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)