Suppose there are 500 units of energy available at the producer level of the energy pyramid. approximately how many units of energy are available to the first-level consumer?

a. 50
b. 5
c. 100
d. 1 .

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

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?

Nucleic acids offer variability because they contain alternate forms of genes called .