What kinds of diseases can vaccinations prevent? genetic diseases only

bacterial diseases only

viral diseases only

any infectious disease

Match the digestive enzymes to the macro molecules they to digest. down fats into glycerol and fatty acids down carbohydrates into simple sugars down nucleic acids into nitrogenous bases and simple sugars down proteins into amino acids

Which of the following systems in absorbing oxygen and releases carbon dioxide

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls