Both the praying mantis and the grasshopper will develop from an egg into a nymph. The complete lifecycle of the grasshopper and the praying mantis is Egg, Nymph, and Adult.
This refers to a change in physical form within the three stages mentioned above.
As a nymph both the grasshopper and the mantis have a similar body to the adult but one that is not fully formed. For example, as nymphs, they both do not have wings.
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