A skeleton is the hard structure that protects the internal organs of a living thing.
Explanation:
The skeletal system is an organ system that serves as the framework of the body of an organism.
Since we see that the only one that results in two compounds is a, that is teh correct answer.
Answer: <span>A. HNO3 (aq) + KOH (aq) → H2O (l) + KNO3 (aq)</span>
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Generally speaking, penguins are BIRDS, in other words, AVES.
☞ I hope that you find my answer useful.
The answer is d. Just so you know
