Hazard symbols<span> or </span>warning symbols<span> are recognizable </span>symbols<span> designed to warn about hazardous materials, locations, or objects, including electric currents, poisons, and </span>radioactivity<span>. The use of hazard symbols is often regulated by law and directed by </span>standards organizations<span>. Hazard symbols may appear with different colors, backgrounds, borders and supplemental information in order to specify the type of hazard. Warning symbols are used in many places in lieu of or addition to written warnings as they are quickly recognized (faster than reading a written warning) and more universally understood (the same symbol can be recognized as having the same meaning to speakers of different languages).</span>
oh hello again, it is mentally impossible (unless you suffer severe brain/head injury) to forget everyone and everything. your brain is constantly taking mental photos of everyone and everything you see, you will always recognize someone you have seen a while ago even if its by the slightest. That probably wasn't my best wording, my brain is fried ☠.
First is the brain, spinal cord, and heart begin to develop. Then A blood vessel forms which will later develop into the heart and circulatory system.
I think the answer is the cochlea and/or the vestibular system.
The answer of the question is 45x