What are the main differences between living cells and viruses?

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion