How many total nitrogen are there in a humans DNA molecule

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.

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet?

The boiling point of a substance in city a is found to be 145 degrees celcius. the boiling point of the same substance in city b is 141 degrees celcius. which city, a or b, is at a higher elevation? how do you know? asap