Some protists<span> are </span>heterotrophs<span>, while others are </span>autotrophs<span>. They cannot be both at the same time.</span>
Endoparasite. This is because it lives inside the host.
Animal cells have different tasks to perform and have different requirements than a plant cell. like plant cells need walls for protection or large vacuoles for droughts
For the answer to the question above, I think the answer is simply because <span>four legs characteristic is not special to mammals but the hair that is something more important and special characteristic of the mammals, that's why. I hope this helps
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