A "Green Warrior" notices a new type of fast-growing weed in the local park that is killing all the native flowers. This is called an "Invasive Species." Why are these species so dangerous?

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• A They are usually poisonous to touch.
• B They have no natural predators in the new area, so they grow out of control and steal all the light and water.
• C They only grow during the night when people are sleeping.
• D They turn the soil into plastic.

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