In
ecosystem decomposers
breakdown dead or decaying organisms,
returning nutrients to the soil to be used by
the plants.
a. an unstable
b. a balanced
c. a defective

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.