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Which atmospheric later is where earths northern and southern lights occur

Which of the following is the best definition of a eukaryota? a. a one-celled organism that does not have a membrane-bound nucleus b. a one-celled organism that does not have a cell wall c. an organism whose cells each contain a membrane-bound nucleus d. an organism whose cells each have a cell wall

Name three things that show evidence of evolution. write one sentence for each, explaining why it demonstrates evidence. (9 points)