After katniss is unsuccessful at cutting down the branch she finds a gift from her sponsors. what is the gift and why can it potentially really to save katniss life?

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.