Explanation:
Osmosis helps maintain homeostasis by maintaining concentration of solvents and solutes constant inside cells.
Oxide ion. because oxsgen has 6 electrons in its orbit or subshell, so it needs only two to achieve the octet rule by gaining 2 electrons.
Gaining electrons means that the element become an anion ion
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An oxidation number is the electrical charge a molecule or ion appears to have as determined by a set of arbitary rules.
Answer:
Metals, non metals and metalloid
Explanation: