Answer:
<em><u>#1 and #2</u></em>
Explanation:
The Crust is both the thinnest layer of the Earth's lithosphere as well as the outermost layer of the lithosphere.
Answer:
Reduce, reuse, and recycle. Cut down on what you throw away. ...
Volunteer. Volunteer for cleanups in your community. ...
Educate. ...
Conserve water. ...
Choose sustainable. ...
Shop wisely. ...
Use long-lasting light bulbs. ...
Plant a tree.
Explanation:
Around 400 million years old