What would happen if a species could no longer reproduce? a. the species would increase in number. b. individual variation within the species would increase. c. the species would decrease in number and eventually die off. ( ! )

In salt water solution,the salt is the blank

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

You have a sample of a metal, the sample is exactly 6.02 x 1023atom, if the sample has a mass 55.85 what metal is your sample made of?