Naturally occurring as it is a stable element. Synthetic means man made and it would be pointless to make oxygen when there is so much of it floating around in the air or in water even if it could be done.
oxygen-15 occurs naturally because it is air, it is transferred through our lungs daily.
it is natural
natural
Silicone is a synthetic material made from silicon, oxygen, carbon, and hydrogen. It is created through a chemical process and does not occur naturally.
synthetic
Cotton and wool are natural; nylon is synthetic.
The difference between natural and synthetic things are that synthetic things are not real. The definition for synthetic is: artificial; not genuine. Natural things are things that can be found in nature and is real.
natural fabric a sobs more water the synthetic fabric. natural fabric is natural plants. synthetic fabric is man made.
Silicone is a synthetic material made from silicon, oxygen, carbon, and hydrogen. It is created through a chemical process and does not occur naturally.
It is synthetic, but what we use to make concrete is natural AND synthetic.
is bromine natural or synthetic?
Polyester is synthetic.
it is synthetic
synthetic
Cotton and wool are natural; nylon is synthetic.
Semi-synthetic
they are synthetic.
synthetic
The difference between natural and synthetic things are that synthetic things are not real. The definition for synthetic is: artificial; not genuine. Natural things are things that can be found in nature and is real.
natural fabric a sobs more water the synthetic fabric. natural fabric is natural plants. synthetic fabric is man made.