Answer: CaCl2
Explanation: the combining power will cross each other giving 1 as the subscript of calcium and 2 as the subscript of chlorine.
A wildlife sanctuary is a place that is strictly controlled in order to protect a species from extinction.
Answer: Add a different diet and maybe add an animal. If you put a bigger water bowl than the cage will become humid. If you change things about the terrain, its a desert so watering more plants and planting trees will make the ground more fertile to other plants. If you continue to take care of the plants until they are able to grow and reproduce. After enough time, where used to be a desert there will be a forest.
