Explanation: Natural gas is a limited resource. Natural gas is in the fossil fuel family and it's underground. I think it's pretty plentiful meaning that there's a lot in the United States of America. Many people use it for home heating instead of heating oil. Some people have oil trucks where the oil truck has to come and deliver oil to them.
So, natural gas is limited resource because it's a fossil fuel and it gives off emissions. It's in the ground and it's from years of decaying stuff. It's not like solar or wind power, it's a limited resource.
<em>1. </em><span><em> the theory that Earth's outer shell is divided into several </em></span><em>plates</em><span><em> that glide over the mantle</em>
<em>2. I am not sure</em>
<em>3. </em></span><span><em>Earth's mantle contained convection cells that dissipated radioactive heat and moved the crust at the surface</em>
<em>4. </em></span><span><em> supercontinent that existed during the late Paleozoic and early Mesozoic eras.</em>
<em>5. </em></span><span><em> the </em></span><em>theory</em><span><em> that the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen "</em></span><em>plates</em><span><em>" that move around across the earth's surface relative to each other, like slabs of ice on a lake.</em>
<em>6. </em></span><span><em>Africa and South America.</em>
<em>7. I am not sure</em>
<em>8. </em></span><span><em>a small area or region with a relatively hot temperature in comparison to its surroundings.</em>
<em>9. </em></span><em>As the plate moves over a fixed spot deeper in the Earth where magma (molten lava) forms, a new volcano can punch through this plate and create an island. </em>The Hawaiian Islands are believed to be formed from one such 'hot spot'.
The answer you are looking for is Collagen.
Hope this helps!:)
