A student wants to answer the question "does adding calcium powder to soil make pea plants grow faster?"

Nucleic acid certain protein cell membranes certain carbohydrates

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!