Will mark brainliest if correct

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.

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?

What are similarities and differences between refraction, reflection, diffraction and absorption?