What is the definition of pathogens?

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Onsider the paragraph above. what is one chemical property of water? a) water is a polar molecule. b) water is the universal solvent. c) water reacts with group 1 metals. d) water has a high specific heat capacity.

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil