Aconfounding variable can also be considered an extraneous variable. true or false?

Yes it is true that a confounding variable can also be considered an extraneous variable.

An extraneous variable can also be a confounding variable. An extraneous variable clarifies the relationship between the independent and dependent variables. A compounding variable influences both the dependent variable and independent variables.

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

a covalent bond, specfically triple bond