Answer:
Astatine and chlorine are halogens only
Nitrogen and sulphur are non metals only
Krypton (Kr) is noble gas only
Cliffs are very heavy rocks and when there is too much weight it can cause cracks that weakens the structural integrity which can cause the cliff to either collapse or give way, falling on the ground below which can kill people crush cars or block roads. Hope this helps :)
Answer:
The major difference is time, Paleo means old and Meso means Medium or middle. From Paleozonic era nly fish and marine critters are alive and the rest of the life forms are extincted and from Mesozoic era about half the life forms are still around like crocodiles, fish, insects, ferns, amphibians, some trees, reptiles. Another half or thereabouts are extinct.
Explanation:
