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TCAP Practice Questions. Which of these is necessary for an ecosystem to be healthy?. Pesticides Biodiversity Extinction Catastrophe. B. Which of the following is one reason that an animal may become extinct?. Expansion of the animals hunting area Abundance of the animals food
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Which of these is necessary for an ecosystem to be healthy? • Pesticides • Biodiversity • Extinction • Catastrophe B
Which of the following is one reason that an animal may become extinct? • Expansion of the animals hunting area • Abundance of the animals food • Loss of the animals habitat • The animal lack of predators C
Unlike extinction millions of years ago, today’s extinctions are mainly being caused by: • Humans • Meteors • Volcanoes • sharks A
Which item below would complete this food chain? giraffe • tree leaves • mice • grasshoppers • cactus A
Most food chains start with: • an animal • a mouse • a plant • the ocean C