Extras
Sir David Attenborough reveals how humans help plants, many of which face extinction.
Marksmen use paintballs filled with herbicide shot from a helicopter to stop Miconia.
Some plants developed adaptations that were unhelpful for the cultivation of crops.
The saguaro features a pleated surface which allows it to expand.
The baobab stores thousands of gallons of water in its spongy wood.
Tristerix seeds travel in bird droppings to invade the bodies of giant cactus.
The Hammer Orchid emits the scent of the female thynnid wasp to confuse the male.
Fungi is able to link a whole group of trees through their root systems.
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Sir David Attenborough reveals how humans help plants, many of which face extinction.
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