School is an example like you have a load of work and its hard and u keep going cuz u know it will get you someone good adn another is running a marothon even though its hard you just keep going. hope this helps and please rate below :)
In a living thing, both tissue and organs are very important to maintaining homeostasis.
Answer:
pathogens
Explanation:
pathogens may occur in various way e.g spread from a person to person by directly body contact
Answer:
the food chain
Explanation:
every species in the ecosystem eats or gets eaten
