The nose, mouth, ears and eyes decide the entry of foreign particles. Little children mostly acquire it because mostly children put their hands or stick their tongues on nearby objects which are mostly infested with bacterias and pathogens, sometimes these particles are harmful and sometimes they aren't.
The mantle is the largest portion of the earth.
THEY ARE LIGHTER THAN WATER BY WEIGHT.
<span>I'm thinking it's Eukaryote, if I'm wrong please tell me.</span>
The most sensitive ones are called rods
