They studied fossils (paleontology) and applied the principle that old layers or rock are lying just below young layers
Explanation:
The eventual fate for our open universe is believed to be either universal heat death, the "Big Freeze", or what can be considered the "Big Rip". This is where the acceleration caused by dark energy eventually becomes so strong that it completely overwhelmes the gravitational, eltromagetic and our strong binding forces.
Arid
<span>Lacking moisture, especially having insufficient rainfall to support trees or woody plants</span>
The answer is d, due to the helms-burton act
Explanation:
An igneous rock with a mixed texture of coarse crystals (phenocrysts) surrounded by fine crystals (groundmass) is termed <em><u>porphyritic</u></em>
