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What organisms grow, feed, and shelter on or in another organism?

  1. Bacteria

  2. Parasites

  3. Pathogens

  4. Viruses

The correct answer is: Bacteria

Parasites are organisms that grow, feed, and shelter on or in another organism, known as the host. Parasites can cause harm to the host by taking nutrients from it or causing diseases. Bacteria, pathogens, and viruses can also cause harm to the host in various ways, but they do not necessarily grow, feed, and shelter on or in another organism in the same manner as parasites do.