Which event is most likely to decrease the amount of sunlight that reaches earth's surface?

a) an ice age.
b) an asteroid impact.
c) a catastrophic flood.
d) a prolonged drought.

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures

How do the evolutionary chart and the video support the claim that all living things are made up of cells?

Omg substrates with the same size and shape as the active site will bind to the enzyme. why is the key labeled the “bad” substrate?