TABLE 13-2 ADAPTIVE FEATURES OF MARINE ( AQUATIC ) BIRDS Bird Features / Structures Purpose /Function Skimmer Longer lower bill Osprey Catching fish in flight ) Penguin Swimming underwater Oystercatcher Knifelike bill Sea duck Webbed feet Sandpiper Feeding along shore Heron (egret ) Long legs and bill Albatross Long -distance flight Pelican Large pouch Commorant Fishing underwater

as many times as you want

this would be a math

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

idk lol use google m8