Multiple questions: 1.what does the theory of continental drift explain? a: the breakup up of pangaea b: the formation of the circle of fire c: the break up selena gomez and justin bieber d: the formation of the earth's layers 2.the coastlines of continents fitting together like puzzle pieces was one of the four pieces of evidence for continental drift. true false why was wegner's theory of continental drift not accepted by the scientific community? a: he had no friends in the community b: he could not explain how the continents moved c: his suggestion of land bridges was not accepted d: he could not explain why the coastlines fit together like puzzle pieces

1. The breakup of pangea

2. true

3. B

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.