What is the loose covering of weathered rock particles and decaying organic matter overlying the bedrock of earths surface

Sara is creating an experiment. her hypothesis states the following. if i increase the air in my tires, then i will get better gas mileage. if this is her hypothesis what column titles do we need in our date table? a. air pressure in tire (psi) and gas mileage (mph) b. air pressure in the atmosphere (psi) and gas mileage (mph) c. miles (m) and gallons per mile (g) d. old battery and new battery

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Carbon 14 is a naturally occurring stable