what are the main jobs of 1. sweat glands 2. epidermis 3. iris 4. sensory neuron 5. optic nerve 6. lens

Explanation:

1.regulates body temperature.

2.regulate fluid and protect the body from mechanical injury.

barrier that protects the body from ultraviolet (UV) radiation, harmful chemicals, and pathogens such as bacteria, viruses, and fungi.

3.responsible for regulating the amount of light that gets into the eye.

4.responsible for converting external stimuli from the environment into corresponding internal stimuli;send projections to other elements of the nervous system, ultimately conveying sensory information to the brain or spinal cord.

5.job of the optic nerve is to transfer visual information from the retina to the vision centers of the brain via electrical impulses.

6. lens focuses the light rays that pass through it in order to create clear images of objects that are positioned at various distances

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