4.6 billion years ago - most likely hydrogen (H2) and helium (He)
probably rich in hydrogen compounds like methane (CH4), ammonia (NH3), hydrogen cyanide (HCN), water (H2O), and formaldehyde (HCHO). Also some N2, CO2 but LITTLE or NO free oxygen.
Molecules of H2 and He move really fast, especially when warm, that they eventually all escaped Earth's gravity and drifted off into space.
A climograph is a graphical representation of basic climatic parameters, it's a monthly average temperature.
You have a bar line and a line graph. Rainfall is shown by a bar graph. The figures is shown at the left side of the graph. Temperature is shown by a line graph. The figures is shown at the right side at the graph.
Adobe is a building material which is from earth and organic materials. Adobe is one of the earliest building material used on the world. The Pueblo peoples of the American Southwest built homes out of adobe, sun-dried earth made from sand, clay, water, and organic matter. This is an example <span>of the concept of cultural landscape.</span>
