By changing the controlled variable.
Answer:
This could mean that the pink ball had a little bit more air in it than the blue ball. They could also have been dropped at the same time, but they were dropped on a hill, and the pink one landed first at the top of the hill, and the blue one landed second at the bottom of the hill.
Explanation:
Have a nice day! :)
Answer:
When lichens and misses died off, they are usually replaced by bigger plants because they have made the place suitable for the growth of larger plants. The dead parts of lichen and misses decompose and turn into small particles of soil, this allow other plant species to grow in this location.
Yes you can use chemical reagents, because all chemicals are hypnotic
