You are presented with the question "What increases the stability of ecosystems?" and the following answer choices: 
- overpopulation
 - water consumption
 - loose soil
 - Quality of life
 - agriculture
 - deforestation
 - ecotourism
 - trees

Now knowing that biodiversity increases the productivity and stability of ecosystems and ecotourism, on the other hand, can help to conserve biodiversity, choose the best answer.


 

       ecotourism  