The predominant gas in the earth's atmosphere is

a.
helium

b.
oxygen

c.
methane

d.
water vapor

e.
nitrogen

Why is immigration so important today?

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet? the planet started to cool and an atmosphere formed. the planet started to become round and heat up. the planet started to wobble and turned upside down. the planet started to compress rock and form more radioactive elements.

An aspect of climate change involving cloud cloud cover is one example of a negative feedback loop. complete the steps of this negative feedback loop.