What is the oxidation number of the element Se

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.

Mga halaman/punong ornamental na di namumulaklak

Match each scenario to the form of energy it represents