they exfoliate with them
Anything in the environment that humans use is a natural resource.
yes
No
Humans, starfish, others.
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
Humans, raccoons, crabs, lobster, starfish.
they use dholes poo for soil
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.