20. Which statement is true of chemical equations? A. Reactants are on the right.
B. Products are on the right.
C. Products have fewer atoms than reactants.
D. Reactants have fewer atoms than products.

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen

Construct at least two possible hypotheses for the student’s experiment.

Land conservation is a worldwide priority. there are several methods to prevent the loss of land due to a variety of reasons. which method is not a way to conserve land? a) sea walls b) rainwater harvesting c) limits on clear cuts of forests d) cut and burn methods of clearing land