Assertion: grasshopper's food | /r/CapableOf | become scarce
Facets:
Source sentences:
text: Most grasshopper species are either solitary or communal, with the latter forming swarms when food becomes scarce.
text: When food becomes scarce, grasshoppers can become serious pests by migrating to other areas like farms and gardens, and feeding on vegetables, fruits, flowers, trees and grasses.