Which description shows competition in an environment

A. An organism that feeds on the same food

B. An organism that finds a place to sleep

C. Three organism battling over limited resources

D. Three organisms of the same species living in an area

The speed of  sound:   sound travels  at different speeds depending on what it istraveling through. of the three mediums (gas, liquid, and solid)  sound waves travel the slowest through  gases, faster  through  liquids, and fastest  through  solids.