the answer is particle - it was a crossword clue & I thought there might have been a scientific answer!
A piece of feces A piece of s--- A poop
lens
A piece of broken pottery is called a shard.
A synonym for a piece of straw could be a stalk or a reed.
Compost.
a piece of sandwich xP
A malliot is another name for a one-piece swimsuit.
An adhortation is another name for an exhortation or a considered piece of advice.
the rook, which is another name for a castle in chess
a chemical change
valise
Another name for the cycles of matter is biogeochemical cycles. These cycles involve the movement and exchange of matter between living organisms, the atmosphere, the hydrosphere, and the lithosphere. Examples include the carbon, nitrogen, and water cycles.