Energy must be transformed in ecosystems because a. energy cannot be created or destroyed b. an organism’s energy must go somewhere c. an organism’s energy must come from somewhere d. all of the above

What are the 3 types of artificial cloning

Which of the following is not a benefit of genetically modified foods? a.pest-resistant crops b.herbicide-resistant crops c.plants that do not require water?

The structure of a dna molecule is best described as a. one long strand of nucleic acids b. two strands of dna nucleotides joined by hydrogen bonds c. two strands of amino acids joined by hydrogen bonds d. one long strand of amino acids