they exfoliate with them
Anything in the environment that humans use is a natural resource.
yes
Humans, starfish, others.
No
a starfish does not have a spine.
soil
it is unknown
they don't use it for anything, its radioactive
starfish sweat underwater humans sweat ouof water
they use dholes poo for soil
Humans, raccoons, crabs, lobster, starfish.
A 'resource' is anything humans can use to their benefit.