Which statement about coal is true? when burned, coal produces pollutants that are released into the air. coal will always stay plentiful in the united states. mining coal improves the environment. burning coal does not pollute the air.

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above