When water<span> molecules </span>move <span>freely </span>across the cell membrane<span>, the </span>process<span> is </span>called osmosis<span>, which is just a special type of simple diffusion.</span>
It's some change in the conditions around the organism, which the organism can detect and respond to. A change in temperature, more light, or something physically poking the organism are examples.
Look on the internet please
The Earth was first considered habitable when we discovered that it was Microbial organisms that started the process. I would go with D.
Explanation:
c a mixture is the answer