Monolith149 Daily

Another place to see what KG is doing...

O2 From the Ocean?

From @earthskyscience

How much do oceans add to world’s oxygen?

Scientists agree that there’s oxygen from ocean plants in every breath we take. Most of this oxygen comes from tiny ocean plants – called phytoplankton – that live near the water’s surface and drift with the currents. Like all plants, they photosynthesize – that is, they use sunlight and carbon dioxide to make food. A byproduct of photosynthesis is oxygen.

Scientists believe that phytoplankton contribute between 50 to 85 percent of the oxygen in Earth’s atmosphere. They aren’t sure because it’s a tough thing to calculate.

Image credit: NASA GFSC

Tornado EF Rating

How is the EF rating of a tornado determined?
See The Enhanced Fujita Scale

Image credit: Category F5 tornado (upgraded from initial estimate of F4) viewed from the southeast as it approached Elie, Manitoba on Friday, June 22nd, 2007. Justin1569 at en.wikipedia