Answer:
Metalloids are metallic-looking brittle solids that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides. Typical nonmetals have a dull, coloured or colourless appearance; are brittle when solid; are poor conductors of heat and electricity; and have acidic oxides.
Explanation:
Answer:
It creates stress in rock.
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It's el mapa so the answer is incorrect. Even though mapa has an 'a' at the end, you will still use el.
