If a tornado uproots most of the trees in an ecosystem, it could be expected that, due to the loss of the trees, there will be a reduction in -
A. sunlight
B. Oxygen
C. Precipitation
D. Soil
Trees release oxygen as a byproduct of photosynthesis, so once the trees are uprooted, they will no longer execute photosynthesis and thus no oxygen would be released by the dead trees.
