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https://www.nationalgeographic.org/activity/save-the-plankton-breathe-freely/ https://www.nationalgeographic.org/activity/save-the-plankto... 70% of the oxygen

https://www.nationalgeographic.org/activity/save-the-plankton-breathe-freely/ https://www.nationalgeographic.org/activity/save-the-plankto... 70% of the oxygen in the atmosphere is produced by marine plants, rainforests are responsible for roughly one-third (28%)

dahfizz 5y ago
How much of the Earth's surface area is ocean and rain forest?
- olivermarks 5y ago
  The ocean is a huge body of saltwater that covers about 71 percent of Earth's surface. https://www.nationalgeographic.org/encyclopedia/ocean/ https://www.nationalgeographic.org/encyclopedia/ocean/ Rainforests cover 2 percent of the Earth's surface. https://quizlet.com/338369119/rainforest-quiz-flash-cards/ https://quizlet.com/338369119/rainforest-quiz-flash-cards/
hn_throwaway_99 5y ago
That seems like it has to be a gross misrepresentation, that only 2% of oxygen comes from other land plants. This link, https://www.factcheck.org/2019/09/amazon-doesnt-produce-20-of-earths-oxygen/ https://www.factcheck.org/2019/09/amazon-doesnt-produce-20-o... , seems like it has more reasonable numbers. First, it's a bit misleading to talk about what produces "oxygen in the atmosphere", because that oxygen was generated over many millions of years. Better to discuss what current percentage of photosynthesis occurs from which sources. The link I gave says a quarter to a third of photosynthesis on land comes from tropical forests, and land vs. marine photosynthesis is split about 50/50.
bliteben 5y ago
I live in the PNW and I recently read in this book https://www.amazon.com/Razor-Clams-Treasure-Pacific-Northwest/dp/0295741422/ https://www.amazon.com/Razor-Clams-Treasure-Pacific-Northwes... that the dominate Phytoplankton that makes up razor clams diet has changed to three different species over the course of the last 100 years. Really makes you think about how little we know, and how long the process of distilling research into actual facts or summaries of how things work takes.

dahfizz 5y ago

How much of the Earth's surface area is ocean and rain forest?

olivermarks 5y ago
The ocean is a huge body of saltwater that covers about 71 percent of Earth's surface. https://www.nationalgeographic.org/encyclopedia/ocean/ https://www.nationalgeographic.org/encyclopedia/ocean/ Rainforests cover 2 percent of the Earth's surface. https://quizlet.com/338369119/rainforest-quiz-flash-cards/ https://quizlet.com/338369119/rainforest-quiz-flash-cards/

hn_throwaway_99 5y ago

That seems like it has to be a gross misrepresentation, that only 2% of oxygen comes from other land plants. This link, https://www.factcheck.org/2019/09/amazon-doesnt-produce-20-of-earths-oxygen/ https://www.factcheck.org/2019/09/amazon-doesnt-produce-20-o... , seems like it has more reasonable numbers. First, it's a bit misleading to talk about what produces "oxygen in the atmosphere", because that oxygen was generated over many millions of years. Better to discuss what current percentage of photosynthesis occurs from which sources. The link I gave says a quarter to a third of photosynthesis on land comes from tropical forests, and land vs. marine photosynthesis is split about 50/50.

bliteben 5y ago

I live in the PNW and I recently read in this book https://www.amazon.com/Razor-Clams-Treasure-Pacific-Northwest/dp/0295741422/ https://www.amazon.com/Razor-Clams-Treasure-Pacific-Northwes... that the dominate Phytoplankton that makes up razor clams diet has changed to three different species over the course of the last 100 years. Really makes you think about how little we know, and how long the process of distilling research into actual facts or summaries of how things work takes.