Answer: Animals
Explanation: Animal cells are eukaryotic but so are plants. However, only an animal can fly to get its food. Plants get their food by the sun or by themselves.
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Primary succession is ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier.
They are different because they use different frequency
Answer: The actual answer is sample B.
Explanation: Igneous Rocks are either known as Intrusive Rocks which are crystallize that form underneath the Earth's Surface, and Extrusive Rocks which are known as volcanic rocks.