Answer:the correct answer is eating or breathing
Explanation: because most animals eat to get the substances they need and breathing is also a big one if they don't breath they will die like the every being on this planet needs oxygen to live if we do not have those we will drop over dead.
<span>The skin is the largest organ of the body, </span><span>area of about 20 square feet
</span><span>The skin protects us from microbes and the elements, helps regulate body temperature, and permits the sensations of touch heat and cold.</span>
Hey i’m willing to help! but i’m confused on what you’d like me to answer. please specify. :)