How do scientist categorize the electromagnetic spectrum? Into six sections based on frequency.

Into seven sections based on frequency.

Into six sections based on amplitude.

Into seven sections bases on amplitude.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.