Which is an exampleof how over-crowdingcauses competitionfor light?A. The canopy of a tropical rainforest allows little light topass through to the lower levels.B. The trees expand their leaf size to smother the otherplants.C. The plants become parasitic by latching onto other treesand taking energy they have made.
The correct answer is B. The trees expand their leaf size to smother the other
plants. Leaf size increase is a common response among trees in overcrowded canopies, in order to increase their available surface to make contact with light.
