Which of these would not be an effective way to represent data collected in a scientific experiment? a)data table showing months of the year and average temperatures b)line graph with time on the x-axis and plant growth on the y-axis c)bar graph comparing the sat scores of two schools over a 10-year period d)pie chart showing time, speed, and acceleration of fifty motorcycles in a race

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

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.