Can someone help me at least 3 questions

Describe the primary and secondary immune response in terms of speed and number of antibodies produced?

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.

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called