What was Oklahoma's role in the Spanish and French exploration of North America in the 1600s and 1700s? (Site 1)
Chemicals are like acid rain. (That’s an example) When it rains acid remain or any other chemical effects occur, it disintegrates the earths ground, mountains and other surrounding objects. Hope this helps!!
Animals with bilateral symmetry have a distinct head end
Need more info please then I'll answer in the comments