How does energy usually flow in ecosystems?
a. from the sun through consumers to producers
b. from the sun through producers to consumers
c. from producers through the sun to consumers
d. from consumers through the sun to producers

B. From the Sun through producers to consumers.

Explanation:

All energy is obtained from the Sun. So the producers (in this case plants, fruits, vegetables) receive that energy through the process of Photosynthesis. After that transfer, consumers (primary, secondary, and tertiary) gain 10% of that Sun obtained energy from its producers.

Hope this helps!

the answer is tropical areas. the tropical areas obtain more

radiant energy from the sun than they lose to space through terrestrial

radiation, and vice versa for polar areas. earth has an energy remaining in the

tropics and an energy scarcity for the polar areas.

explanation:

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.