Fossil fuels are formed by organic remains that have been buried under rock. "Organic remains" can include animals and plants (think of oil and dinosaurs).
The state of the atmosphere at a given place and time as regards to heat, dryness sunshine, wind, rain, etc.
A. Mercury
Project Mercury was designed to send a person into orbit before the Soviet Union did so.
<span>An insulator resists conduction of electrons.</span>
The negative charge on the particle determines that it moves towards the positive charge.