Classify each of the following pure substances as an element or a compound. a. silicon (si) chipb. oxygen (o2)c. hydrogen peroxide (h2o2)d. rust (fe2o3)e. methane (ch4) in natural gas

Decomposition is the cycle at which bacteria breaks down any organic material into the soil

Any vitamins or supplements can be obtained without prescription and are widely used as alternative from western medications. most supplements are not valued by the fda or any other drug and food agencies.

The phase where ice changes directly to gas is called sublimation