I believe it is <u>instinct </u>that is the behavior of the caterpillar building a cocoon.
Nearly all of the energy comes from the sun
The continents that are now separated by the Atlantic Ocean once formed a single landmass.
All of our current continents were once connected as one single landmass named Pangea. Pangea broke apart into different continents. Fossils found in Africa have been found in South America, and etc.
Carbohydrates are broken down and they release energy.
Hadean is the first eon of precambrian, and took place around 4.6 and 4.0 billion years ago.