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The answer is A. Its organism one because if it got its energy from a biotic source, there would be an arrow pointing towards it.
Answer:
Different numbers of neutrons
Answer:
Yes
Explanation:
Of the many functions of protein in your body, one of its most critical is supporting your immune system. The immune response protects you against harmful microorganisms, including viruses and bacteria, as well as foreign substances that might attack your defenses, such as a thorn or flames from a fire.