Ervin wants to perform an experiment to find out what type of wing allows a paper airplane to fly the farthest. He decides to test four wings, each with the same shape but with different lengths. He needs to keep his throwing technique and the wind speed constant for each test. Which is the independent variable in this experiment

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave

carbon atoms, hydrogen, oxygen, and nitrogen.

bacterium is not correct

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.