Which of the following statements is true? a.) Thermal pollution is the main disadvantage of hydroelectric power.

b.) The total amount of water in an ecosystem is always increasing.

c.) Wood and water are nonrenewable natural resources.

d.) The greenhouse effect is primarily caused by cars and trucks.

Step 1 review the imaginary strand of dna below. note the complementary base pairs. a g c a a t c c g t c t t g g t c g t t a g g c a g a a c c step 2 to begin replicating this strand of dna, draw the two sides of the strand separating. step 3 now, draw the free-floating bases linking up with the separate sides. remember to follow the rules of complementary base pairing. step 4 draw the two resulting dna strands.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?