<span>Fossils, or the fossilized remains of an animal, tend to be bones which are made of much denser materials than flesh. Since a jellyfish has no bones, a bony fish is more likely to leave a fossil.</span>
"An example of mutualism in the rainforest is the pollination of the Durian tree by bats."
The second and third one I believe
Answer:
An adaptation.
it's trying to stay safe from predators in the same way it feeds.