Question

how environmental factors are controlled by glasshouses to improve crop yield

Answer 1

Answer:

I think this would be your answer ↓

Explanation:

In addition to temperature, humidity, sunlight and soil moisture, plants also need CO2 for photosynthesis (carbon assimilation) which affects their growth and yield. You must monitor CO2 levels and supplement CO2 whenever its level goes down in your greenhouse.

Answer 2

Temperature. Temperature is one of the most important factors responsible for the growth of plants. ...
Humidity. Humidity is another important factor essential to maintain plant growth. ...
Sunlight. ...
Soil moisture. ...
Carbon dioxide (CO2)