Answer: 1. 10% is used to live 30% is stored.
2. an educated guess.
Explanation:
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Answer:
the solution is acidic as its ph has already exceeded the neutral level
The correct answer is option 4. In a double covalent bond, two pairs of electrons are bonded or there is a total of four electrons being shared in a bond. For example, we have oxygen. Two atoms of oxygen share two pairs of electrons to have a stable structure.