Domestic cats are not from the wild which means that they're usually called house cats with the Wildcats they were born and raised sometimes from the wild
Answer:
Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things
The answer is the first one: “...attract each other.”
The Trout are probably not used to the water and their surroundings.