The answer is 4 is helps you estimate the distance between two places.
Explanation:
The Earth is comprised of many plates that float on the hot magma in the mantle layer. They are constantly moving but its so slow we can't feel it. A long time ago, all the land on Earth was connected in one big continent named Pangaea. As the plates have moved the land has separated forming the continents.
When plates come together they cause friction between them. This causes the plates to push up forming a mountain. This was how the Himalayan mountains were formed.
China has made limiting laws on children that a couple can have
Hydrogen. That is how it is continuing to heat, the Hydrogen atoms are fusing to form Hydrogen, but at this point the majority is Hydrogen, eventually it will be majorly Helium, then Carbon.
A) Ha crecido rápidamente en los último siglo.
