FIND OUT MORE. Earthâs crust is made of rock, and rock is made of natural substances called MINERALS. There are three main types of rockâsedimentary, igneous, and metamorphic rock. Each type is produced in different ways. The oldest rocks on Earth were formed about 3.8 billion years ago.arthâs crust is made of rock, and rock is made of natural substances called MINERALS. There are three main types of rockâsedimentary, igneous, and metamorphic rock. Each type is produced in different ways.
On the Chuck Taylor high top basketball style sneaker, the logo is on the inside. On most other styles of Converse shoes, sneakers and boots, the logo is on the outside of the... Star Gazing
1 Therefore, in this case the inverse is false. 2  The converse is  If an object has color, then it is red.  Objects can have other colors, of course, so, the converse of our statement is false. 3  The negation is 4  . There exists a red object that does not have color.