Hey mate!
You stuck?
Humans use selective breeding to pass desired TRAITS on to the next generation of organisms.
Hope this helped!
Stressors may be natural in origin, being associated with such environmental influences as:
competition, predation, disease, and other interactions among organisms
constraints related to climate or to inadequate or excessive nutrients, moisture, or space
disturbances such as wildfire and windstorms
Smoke is the correct answer. good luck
Some bacteria and fungus actually directly feed plants in exchange for food the plant provides. Fungus can even extend the roots of the plants, growing from the tips out, further into the soil helping the plant find more water and nutrients.
Hope this helps:)