1) Changes in light and temperature between night and day a) Changes that don't alter ecosystems b) Changes that alter ecosystems 2) Pollution a) Changes that don't alter ecosystems b) Changes that alter ecosystems 3) Changes in light and temperature between night and day a) Changes that don't alter ecosystems b) Changes that alter ecosystems 4) The rise and fall of sea levels (tides) a) Changes that don't alter ecosystems b) Changes that alter ecosystems 5) Disease and the introduction of different living organisms from different ecosystems a) Changes that don't alter ecosystems b) Changes that alter ecosystems 6) Human activities like building a) Changes that don't alter ecosystems b) Changes that alter ecosystems 7) Animal migration a) Changes that don't alter ecosystems b) Changes that alter ecosystems 8) Natural disasters like floods, forest fires or volcanic eruptions a) Changes that don't alter ecosystems b) Changes that alter ecosystems 9) Excessive hunting, fishing or intensive farming a) Changes that don't alter ecosystems b) Changes that alter ecosystems

Changes in Ecosystem

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אפשרויות

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