Answer:
Noble gases
Explanation:
Neon and argon have 8 electrons in their outermost shells. The elements which have 8 electrons in the outermost shell or in the valence shell,are known as the noble gases.
Answer:
A.
Single-celled organisms are simple, while multicellular organisms are complex.
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Fe2(SO4)3 + 6KOH -> 3K2SO4 + 2Fe(OH)3
Answer:
Carbon dioxide
Explanation:
Humans are animals and we exhale carbon dioxide