The details will depend on which tundra ecosystem one is referring to but tundra are characterized by cold temperatures little precipitation and no trees. Tundras are […]
Increased gravity for one thing… Jupiter is roughly ##11## times the diameter of so has volume about ##1300## times the volume of the Earth. If the […]
One has an explicit date and the other is relative An absolute age is one determined usually by mass-spectrometry where an isotope is measured and then […]
There are two theories – a collision theory and a gravitational-tidal theory. The first theory suggests that when the solar system was being formed Venus (like […]