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Three billion years ago, earth's atmosphere was very different. it included the gases methane and ammonia. if scientists found a new planet outside our solar system that had an atmosphere similar to earth's three billion years ago, what kingdom's organisms would you expect the new planet's organisms to resemble?
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Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.
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The solution inside a plant cell is approximately a 1% saline solution and a 21% nacl solution the ,cytoplasm of a plant cell will
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Introducing minvasive species to an ecosystem results in an increase in biodiversity is it true or false
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