Argon
Water Vapor
Carbon Dioxide
methane
Where, I'm unsure, but when, I think I know. There is a theory that the first asteroid to hit Earth was actually a comet. It wiped out the dinosaurs.
<span>El Nino
</span>A change in the water temperature of the eastern Pacific Ocean that produces cooler than usual surface water temperatures. An unusually long period during which rainfall is below average. Used by NOAA to collect data to predict an El Nino<span>.</span>
B. makes because google says so and i believe him
A) China 1.4 billion (India had 1.3 billion)
