Answer:
C. More people have moved to urban areas.
Explanation:
The first one. The use of irrigation.
Answer:
Explanation: environment plays an important role in healthy living and the existence of life on planet earth. Earth is a home for different living species and we all are dependent on the environment for food, air, water, and other needs. Therefore, it is important for every individual to save and protect our environment
9000/10=900 people per square mile