different erasers are different materials so both. some are made from rubber that comes from trees and others are made syntheticly
It is a synthetic addition polymer.
is a spider web a polymer
No nitrile rubber is a synthetic rubber polymer
Polyethylene is a polymer that exists in both synthetic forms, widely used in plastic manufacturing, and natural forms, found in plants and trees as a waxy coating.
Because you can design a synthetic polymer to exactly meet your needs. You can modify a natural polymer sometimes if it's not what you need, but at that point is it really a "natural" polymer? Take cellulose--a perfectly serviceable natural polymer, they build millions of homes every year out of it. But what if you need a polymer you can see through? Cellulose won't work for you there unless you dissolve it in acetic acid (cellulose acetate) or nitric acid (cellulose nitrate). By the time you're done, you have a polymer that's no longer really "natural."
It is a synthetic addition polymer.
is a spider web a polymer
A natural polymer would be rubber which is obtained from nature. A synthetic polymer would be polybutadiene which behaves like rubber.
it is a synthetic polymer. depends on how you made it
neither
Not truly. Neither is it a natural fibre. It is manufactured from cellulose, which is a naturally occurring polymer. It's regarded as "semi-synthetic", or "artificial".
natural, starches are a form of sugar, potatos have a form of starch. I'm sure there are also some synthetic ones as well.
a natural or synthetic pigment in an acrylic polymer emulsion
For example thermoplastic and thermosetting polymers, natural and synthetic polymers.
No nitrile rubber is a synthetic rubber polymer
Polyethylene is a polymer that exists in both synthetic forms, widely used in plastic manufacturing, and natural forms, found in plants and trees as a waxy coating.
Because you can design a synthetic polymer to exactly meet your needs. You can modify a natural polymer sometimes if it's not what you need, but at that point is it really a "natural" polymer? Take cellulose--a perfectly serviceable natural polymer, they build millions of homes every year out of it. But what if you need a polymer you can see through? Cellulose won't work for you there unless you dissolve it in acetic acid (cellulose acetate) or nitric acid (cellulose nitrate). By the time you're done, you have a polymer that's no longer really "natural."