Which of the following minerals has greasy luster, no cleavage, and a white streak?

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.

Explain why the plants cortex would serve as the best food source for animals

To be or not to be that is da question