Answer: the third one
Step-by-step explanation:
Y=9x because if you divided y by x all the numbers will equal to 9 which is proportional
1b,
2b,
3a, which grade is this?
Carbon dioxide from the atmosphere dissolves in the surface waters of the ocean. Some of the carbon dioxide stays as dissolved gas, but much of it gets turned into other things. Photosynthesis by tiny marine plants (phytoplankton) in the sunlit surface waters turns the carbon into organic matter.
