Maya and Leah decided to do their STEM Fair project on the effects of different soil nutrients on strawberries. They have several ideas about the design of their experiment. They will be using four potted plants. Which design would best answer the question the girls want to investigate? Group of answer choices

Add different amounts of the same nutrient to each and measure the size of the strawberries.

Add the same amounts of different nutrients to each and measure the size of the strawberries.

Add different amounts of the same nutrient to each and taste the strawberries.

Add different amounts of different nutrients to each and taste the strawberries.

D. Add different amounts of different nutrients to each and taste the strawberries.

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

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.