Asked by ggg
Why are invasive species dangerous to the environment?
They pollute the environment.
They are always predators.
They threaten biodiversity.
They bring abiotic factors.
All Answers 1
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Correct answer: They threaten biodiversity.
Why: Invasive species can outcompete, prey on, or bring diseases to native species, cause hybridization, and alter habitats and ecosystem processes — all of which reduce native species richness and ecosystem resilience.
Why the other choices are incorrect:
- "They pollute the environment." — Not generally true. Some invasives can change nutrient cycles or water quality, but calling them pollutants is misleading.
- "They are always predators." — False. Invasives can be plants, herbivores, pathogens, or competitors as well as predators.
- "They bring abiotic factors." — Incorrect: abiotic factors are nonliving (temperature, soil, water); organisms don’t “bring” abiotic factors, though they can alter them.
Why: Invasive species can outcompete, prey on, or bring diseases to native species, cause hybridization, and alter habitats and ecosystem processes — all of which reduce native species richness and ecosystem resilience.
Why the other choices are incorrect:
- "They pollute the environment." — Not generally true. Some invasives can change nutrient cycles or water quality, but calling them pollutants is misleading.
- "They are always predators." — False. Invasives can be plants, herbivores, pathogens, or competitors as well as predators.
- "They bring abiotic factors." — Incorrect: abiotic factors are nonliving (temperature, soil, water); organisms don’t “bring” abiotic factors, though they can alter them.
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