Why is a green leaf used in the experiment

Dna is the genetic material that makes up living things, and folic acid plays an important role in the information of dna. jon wants to study the effect of folic acid on dna formation in microbes. which statement accurately describes the variables in this study

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

The body of water found at number 4 on the map above is the