In the absence of oxygen, what is the net gain of atp for each glucose molecule that enters glycolysis?
a. because in the absence of oxygen,
b. no atp can be made four atp up to 30 atp none,
c. because all of the available energy remains in either lactate or ethanol two atp
d. none

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils