Answer:
a base is something that reacts with an acid to form water and salt , an alkai is any base that is soluble in water
Answer: I'd say Seafloor spreading.
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a malachite is a mineral
N, B, Be, C
Explanation:
N (Nitrogen) has 14.0067 B (Boron) has 10.81 Be (Beryllium) has 9 and C (Carbon) has 12