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They are know as parasites
no they cannot survive because some of them have basic needs for themselves like their body temperature it is too cold and a bear will stay and sleep outside the cave so the answer is no :D
a moss cannot only have sun but it needs lots offood and water in order to survive!
No. HIV needs a host. It does not live long, outside the body.
They get all their life needs by leeching the very life and energy out of any living thing it can infect, which is called a host. Anything the host eats, the parasites eats. When it wants a snack, it drinks some of the host's blood.
They get all their life needs by leeching the very life and energy out of any living thing it can infect, which is called a host. Anything the host eats, the parasites eats. When it wants a snack, it drinks some of the host's blood.
No, kelp cannot survive without water. Kelp ideally needs cool, nutrient-rich water to thrive.
Ectopic pregnancies are in the fallopian tube and the baby cannot attach itself anywhere there to get the nutrition that it needs to survive.
In a vacuum no living thing can live. Anything that needs something else to survive cannot live. Same thing with a solid.
Ringworms manifest in dogs heart and are considered parasites, which is a small living organism that needs a host to survive.
Because they compete to survive. Like people we cannot live without foods and all our needs so they compete for their needs. == ==
The basic need if a human being is food, shelter and clothing. These are things that he cannot survive without.