Worms.
Oysters.
Some that live in the bottom of the ocean, where no sunlight can reach it.
depends on where you live and how big the lawn is
There are some organisms that make there own food and that don't need vitamins from the sun.
there are many organisms that do not require sunlight to live but then there are some that need hosts
As lawn mowers are not alive the cannot have any kind of life. Hard or otherwise.Undoubtedly some are used more often than others and some are not serviced as often
A community is place where organisms live.
If you mean organisms that live in water, then that will affect the ecosystem because some organisms won't have the dead organisms that they used to feed on, which will cause their death. On the other hand, if you mean the death of organisms that live on land in water, then that will affect the water, and will probably make it contaminated, which will cause the death of the organisms that drink the contaminated water.
Certain types of species live across the globe
yes but some organisms can harm a ecosystem
parasites