Chronic diseases are select one: a. contagious. b. the leading cause of death and disability in the united states. c. inclusive of aids and lyme disease. d. not preventable.

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?

If a checkpoint detects damaged dna, the checkpoint may