Katrina inserts a key into her car’s ignition. she turns the key, putting her car into ignition mode. in this mode, some energy is used to increase the temperature of the car’s fuel. this energy allows the fuel to combust and the car to move. what’s this energy called? absorbed energy activation energy chemical energy released energy solar energy

The correct option is CHEMICAL ENERGY. 
Chemical energy are stored in the bond of chemical compounds, when these compounds undergoes chemical reactions, the energy inside their bonds is release as energy. Gasoline as a chemical substance  is made up of bonds which have inherent energy within them, when a vehicle is put in an ignition mode, the energy in the chemical bonds are broken  and energy is released to carry out work in the car system.

Humans can affect weathering and erosion in several ways.  humans cause  increases in acid rain and pollution, which increase the amount of  weathering  agents in the air and water, and then on land.for an easy answer: 1) acid rain2) pollution