Which of the following major contributions were made by maury

Matthew Fontaine Maury was head of the US Navy’s Department of Charts and Instruments, in mid to late 1800s. He made detailed charts based on the records of the Sea captains of ocean currents and ocean winds that helped captains plot the best sea lanes for their voyages. He also mapped the bottom of the ocean.

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )