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How Saguaro Cacti Store 1000 Gallons of Water

The saguaro features a pleated surface which allows it to expand to contain all the water it needs: it can hold over a thousand gallons. During dry times, it can pull from this source to grow and produce flowers and seeds. When fully loaded, the cactus won't need to absorb water for an entire year.
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Clip Season 1 Episode 4 Length 02:09 Premiere: 07/27/22

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Tropical Worlds - S1 E1

Sir David Attenborough takes a plant's-eye view of life in a rainforest, a world of stunning beauty but also fierce competition.

  • Sunday April 5, 2026 10:00 pm ET on KET2
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