Nearly 150 years ago, man-made CO2 was introduced into the atmosphere primarily through . Currently, is the main contributing factor to increased levels of human-produced CO2 in the atmosphere.

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness

Determine the total number of atoms in 1.0 mol of co2