Answer:
This means that waves need a medium to propagate, but light waves propagate where no particles are present. ...
cold
Warm air lifted over a moving cold air mass will produce a _____ front.
Answer: The answer would be minerals. Synthetics are made by men, and shouldn't be found in the earth Vitamins are organic Cement is a mixture of an organic compounds and rarely found in nature.
3.0 × 10
molecules
Explanation:
there are many molecules
