Q.

Snakes and vultures are eating rats in a field. If wild dogs are let into the field, what will be the immediate result?

A. Decrease in the number of snakes
B. Decrease in the number of vultures
C. Decrease in the number of rats
D. Increase in the number of snakes
Answer» C. Decrease in the number of rats
Explanation: There will be a decrease in the number of rats simply because rat is a prey to all the three of them and this leads to just a single conclusion that there is decrease in the number of rats.
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