A compound is a substance that contains two or more elements close elementA pure substance that is made from only one type of atom. Elements are listed on the periodic table. Elements cannot be ...

There are three main rock types: igneous, sedimentary and metamorphic. These rocks are made of minerals ... There are many ...

New Curtin-led research has revealed that water played a far bigger role than previously thought in shaping Earth's first ...

However, the age of each fossil primate needs to be determined so that fossils of the same age found in different parts of the world ... in the rock record. For example, in the rocks exposed ...