Answer:
Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity.
Explanation:
It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace amounts of other gases, and water vapor. This mixture of gases is commonly known as air.
Molten Lava, and not solid like the crust.
Warm Front would be your answer
If the DNA strand is mutated it can cause genetical and physical defects. Just as an extra chromosome can cause Trisomy 21 which cause Down Syndrome.
