If the Earth is neither tilted toward or away from the Sun, then the northern 1 point hemisphere will experience ---
A-spring or fall
B-summer or spring
C-summer or fall
D-fall or winter

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.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

b) the inside picture would look at a very high temperature in a very low ph