Cars do not produce carbon dioxide gas emissions. Lighting in store parking lots uses more energy than lighting inside the store.
Introducing a predator means there will be less prey which will help balance the population of prey. Some predators may run out of food and there might be no prey left for them. If the prey were removed the predator population would decline.
One half-life after a radioactive isotope is incorporated into a rock there will be only half of the original radioactive parent atoms remaining and an equal number of daughter atoms will have been produced.
Everything in the universe was created when the Big Bang occurred and the universe is expanding
