What makes the green stain on your jeans?
Uh...grass? Yes, but what makes the grass green? The answer is chlorophyll.
Uh...grass? Yes, but what makes the grass green? The answer is chlorophyll.
80 to 90 percent of animals living in the ocean make light. Most live in the twilight zone.
It’s 299,792,458 meters/second (or 186,000 miles/second). It’s sometimes called the "universal speed limit".
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