Question

environmental controls are designed to keep your plants looking vibrant and healthy in all weather conditions. ensure ____________ to use environmental controls effectively. select all that apply. ridge vents are closed if winds exceed 20 miles per hour heaters are set to 70°f if outside temperatures are below 50°f side curtains are open if outside temperatures exceed 60°f ridge vents are open if outside temperatures exceed 60°f

Explanation:

These are all reasonable environmental - control measures for plant health. Closing ridge vents in high winds protects plants from wind damage. Setting heaters when it's cold keeps plants warm. Opening side - curtains and ridge vents when it's warm allows for proper ventilation and temperature regulation.

Answer:

All of the above (Ridge vents are closed if winds exceed 20 miles per hour, Heaters are set to 70°F if outside temperatures are below 50°F, Side curtains are open if outside temperatures exceed 60°F, Ridge vents are open if outside temperatures exceed 60°F)