Flagellum. This is the only thing I could come up with because you did not provide an image.
There are several techniques used to evaluate the activity of the brain, each technique has its own mechanism. One of the most known technique with repeated scans is Computed tomography.
Computed tomography (CT) is a technique that <span>includes repeated scans to allow researchers to see the brain at work. the x-ray beams are aimed at the subject's head then sampled by one of the many detectors in the machine.</span>
Pollution and digging oil wells. Pollution contaminates the Earth and digging oil wells can cause earthquakes.
The orientation of a plant or other organism in response to light, either toward the source of light >positive phototropism<span> or away from it ></span>negative phototropism