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Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.

Select the word from the list that best fits the definition apparent movement of a star used to measure its distance from earth

Excess nitrogen can lead to a algal blooms and the death of fish. which characteristic of nitrogen causes this problem?