Explanation: The first thing that you want to do is convert .4 kHz to Hz. To do this, you multiply the number by . You should ger 400 Hz. After you've done so, you're going to look at the equation "wavelength = velocity/frequency." You then plug in the numbers into the equation: "wavelength = (16 m/s)/(400 Hz) The resulting answer is .04 meters
The type of food chain that exists in a pond is called the grazing food chain. In a pond, the producers are phytoplankton like some algae and submerged plants found at the edges. The consumers have included zooplankton and the last decomposers are some bacteria, fungi, etc found at the bottom of the pond.