Which conduction pathway structure would be located in superior wall of the right atrium?

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Which of the following statements is true? a. there are more chromosomes in an organism than there are genes. b. there are more genes in an organism that there are chemical bases. c. dna is made of sugar, phosphate, and carbon. d. genes are found in specific locations on a chromosome.

Acquired mutations can result from radiation pollution toxins inheritence select all that apply