The largest level of biological study is the

Disinfection of impression materials is usually accomplished by a. sterilization with high heat. b. spray or immersion in a chemical disinfectant. c. sterilization with steam under pressure. d. allowing the impression to sit 24 hours in water until all the organisms die.

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Which process is involved in growing crops? irrigation transportation recreation condensation