photosynthesis

Eventually plants trapped so much carbon dioxide, which is necessary for photosynthesis, that CO2 levels in the atmosphere plummeted by 90%.

From The Wall Street Journal ● Oct. 16, 2026

For the next 50 million years they had no leaves and conducted photosynthesis in their bare stems.

From The Wall Street Journal ● Oct. 16, 2026

Plants’ “signature trick,” the foundation of life on earth, is photosynthesis, which converts light energy into chemical energy.

From The Wall Street Journal ● Oct. 16, 2026

That diversity gives scientists a rare opportunity to examine how plants can transition between different forms of photosynthesis.

From Science Daily ● Sep. 23, 2026

However they had gotten there, Spirit Lake was now their home, and their photosynthesis was creating oxygen as a waste product.

From "Mountain of Fire" by Rebecca E. F. Barone

He suspects that these minerals may have been deposited while the earth's atmosphere was in a transition state, just beginning to accumulate the oxygen that was being released by the photosyntheses of slow-living, primitive plants.

From Time Magazine Archive