Covalent for the first one
Answer:
a
Explanation:
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Answer:
The number of electrons, in turn, determines the chemical properties of the atom. Protons contribute to the mass of an atom and provide the positive charge to the nucleus. The number of protons also determines the identity of the element
The pebbles become smooth and even because of erosion. the waves from the sea rub against the pebbles this is erosion. x
Answer:
<em>suface wave</em>
Explanation:
<em>hope this helps </em>
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