Which of the following ranks the redox-active species of the electron transport chain in order of decreasing electron affinity?

a. o2 > fad > coq > nad+
b. nad+ > fad > coq > o2
c. o2 > coq > nad+ > fad
d. o2 > coq > fad > nad+

What effect might melting sea ice have for people who live in coastal areas?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123