Question

what is the main characteristic of gills​

Answer 1

Answer:

Explanation:

Gills are a necessity for underwater life. Gills absorb oxygen from water and release carbon dioxide, allowing fish to breathe underwater. All fish have gills, but some species of fish living in extremely oxygen-depleted environments also have developed lungs.

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Answer 2

Characteristics of Gills.

• They consist of filaments of tissue.
• High surface area for gaseous exchange.
• Main respiratory area in aquatic animals.
• It takes in oxygen from the water.