How photosynthesis can produce sulfur instead of oxygen

Some photosynthesis releases sulfur instead of oxygen

Not all photosynthesis produces oxygen. Some bacteria use hydrogen sulfide instead of water in the process. As a result, they release sulfur instead of oxygen.

Humans domesticated wheat by favoring plants that couldn't spread their seeds

Wild wheat normally releases ripe seeds, allowing them to scatter and grow elsewhere. Early farmers tended to harvest plants whose seeds stayed attached to the stalk, because those were easier to collect. Repeated selection made cultivated wheat increasingly dependent on people to harvest and replant it. Agriculture changed the plant as much as the plant changed human life.

This squid leaves a flashing piece of itself behind

When threatened, the deep-sea squid Octopoteuthis deletron can break off glowing parts of its arms. The pieces keep moving and flashing after they separate, distracting the predator while the squid escapes.

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How photosynthesis can produce sulfur instead of oxygen

Some photosynthesis releases sulfur instead of oxygen

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