Which of the following is a source of genetic variation in sexually reproducing organisms?
a. replication
b. dominance
c. mitosis
d. meiosis

Which kind of aquatic ecosystem does the photograph most likely show? a. marsh b. swamp c. lake d. river

During an investigation of an xss attack, the investigator comes across the term "[a-za-z0-9\%]+" in analyzed evidence details. what is the expression used for?

The organelle pictured is found in cells of and is theorized to have once been an independent organism.