What have scientists determined the average salinity of ocean water to equal?

3.45 g/kg

34.5 g/mL

3.45 g/mL

34.5 g/kg

what's the rest of the question

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

i won't lie i don't know so go online and ask google thats what i do