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
Runnoff and other man-made probelms have increased the number of the crown-of thorns starfish. These large increases in crown-of-thorns starfish started in the early 1960's. Every 15 years there has been another large increase in this starfish.
Humans, raccoons, crabs, lobster, starfish.
they use dholes poo for soil