or log in
The rise and drop of sea levels caused by the gravitational force of the Moon.
A glacier is a large body of ice that forms from snow, and is in constant, slow motion.
The four outer planets (Jupiter, Saturn, Neptune and Uranus) do not have solid surfaces, thus...
Plate tectonics is a theory dealing with the movement of plates.
Water covers about 71% of the Earth’s surface. But why are there two types of water on Earth,...
Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.
Learn about animal species that emerged in the distant past and stayed mostly unchanged
Seas and oceans cover almost three-quarters of the Earth’s surface. 97.5% of the total...