Which of the following is a likely result of deforestation? the amount of carbon dioxide removed from the atmoshpere is reduced.
Wind blows soil away because the plant cover has been removed.
Water runs off the land more rapidly and causes floods.
All the above.

All of the above

Explanation:

Trees reduce carbon, if there aren't trees they can't reduce carbon, trees help hold soil together with their roots, and (I believe) trees help stop floods by slowing down erosion and keeping everything in place.

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the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.