Chemistry, Physics. the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound. Chemistry. a quantity of a substance, the weight of which, measured in any chosen unit, is numerically equal to the molecular weight; gram molecule.
Crickets are omnivores and will eat fruit, seeds, leaves, other insects, nectar and parts of dead animals. While they are agricultural pests that will eat crops and seeds, this occurs rarely. Overall, crickets are not bothersome to humans.
Although grasshoppers are often bright green, and most crickets are brown, there are plenty of exceptions. In fact, grasshoppers and crickets are so closely related that some of the insects that we call grasshoppers are actually more closely related to crickets than they are to other grasshoppers.