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?

Individuals within populations exhibit some diversity. as a result of possessing slightly different traits, some individuals are better able to survive and reproduce than others. if these individuals changes in the characteristics of the population may occur over time. the cumulative change in these characteristics is known as