Earth's crust is made of rock, and rock is made of natural substances called minerals. There are three main types of rock: sedimentary, igneous, and metamorphic rock. Each type is produced in different ways. The oldest rocks on Earth were formed about 3.8 billion years ago.
I believe the answer might be A
Answer:
the answer is, D
Explanation:Switching off lights when not in use protects environmental quality.
Snsnsnsnsnshjsshhsshhshshshsbsbsb they told me i have to answwr a question for me to post a question what
Explanation:
It's a soft metal, reactive and with a low melting point, with a relative density of 0,97 at 20ºC (68ºF).
