Colorful fish

Selective breeding for centuries has produced some color variations, some of them far from the “gold” color of originally domesticated fish. There are also different body shapes, fins, and eye configurations. Some …

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Stoma

Stoma . They are the main participants in photosynthesis , since the mechanical gas exchange takes place through them, that is to say that oxygen (O2) leaves here and carbon dioxide (CO2) enters . Summary [ hide ] 1 Location 2 Functions 3 Formation and cellular origin …

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Stigma

Stigma . It is a mark or signal that is made on the body or psyche of people. Cause of bad reputation: his criminal record was the stigma that prevented him from prospering. Mark or sign …

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