In general less energy is needed to produce a product from recycled material than from new material. This is one reason why we should recycle. Another reason to recycle is because?

To protect the environment.

Explanation:

One reason is  to save the energy that is required to manufacture the new product from raw materials.

The second reason is to save the environment, the waste material that is produced ultimately is dumped into the environment it will cause waste generation. This can cause pollution which has both short term and long term health issues.

The new materials also requires money which can be saved when using the old material even if not the whole cost some of it can be saved.

There is a great need to save the environment from harmful and unnecessary generated waste which can be preserved by recycling the wastes.

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