What are the name of the double walled sack surrounding the lungs?

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.

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays