The answer is litter carbon dioxide bubbles
I hope that helped
If one population, such as lets say a hawk decreases the niche, or the importance of an animal or its effect in the ecosystem, on the mice. the mice population increases. or it can be lets say plants and bugs, the lady bug goes away and the other bugs eat the plant
Earth science hope it helps
The smallest bone in the body is the stapes and it is the third bone of the three ossicles in the middle ear.