What process brings oxygen from the epipelagic zone to deeper oceanic zones?

downwelling from polar to equatorial regions
downwelling in polar regions
upwelling from equatorial to polar regions
upwelling in polar regions

Thank you for posting your question here at . I hope the answer will help you. Feel free to ask more questions.
The process brings oxygen from the epipelagic zone to deeper oceanic zones is Upwelling from equatorial to polar regions

The name of the instrument that the scientist uses is called a microscope.a microscope is used to view objects which is not visible to the naked eyes

This is s cute awee : (( . well if she's showing you signs that she may like you , then shoot your shot ! don't be afraid . & if you're unsure that she's giving you these signs , then wait out for a little bit . most girls are different . some may act really sweet , but only bc you're a good friend of hers . that , or she might like you . you just never know . but i think you should sit down with her & tell her how you feel . but don't be awkward & shy . just be straight up & tell her how you feel . if the feelings aren't mutual , then don't cry about it . you need to respect her decision & look for others in the world . feelings can be difficult & confusing , but don't be afraid to show them . i say you play it out & if you're still unsure about it , talk to her . - rach