A. To carry oxygen
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Answer: Phytoplankton & Cyanobacteria
Explanation: They produce their own food
Answer: A. ionic
In ionic bonds electron are transferred from one atom to another. In ionic bonds , the metal atom loses electrons to become positively charged cation whereas the nonmetal atom accepts those electrons to become negatively charged anion.
Millions of galaxies. (More than that, too.) but that would be your closest answer.
