Answer:
A. The built environment has an impact on the natural environment.
Explanation:
Of human activities on earth, construction is one of the most impacting on the environment.
In the United States, for example, approximately 35% of all materials extracted from nature annually (wood, metals, sand, stones, etc.) are used by construction.
In addition to the natural resources used, over 50% of all energy produced in the United States is used to power our homes and condominiums. A considerable amount of energy could be easily saved if these buildings made better use of natural sunlight or used economical light bulbs and showers, for example.
To lessen this environmental impact, in the last decades of the 20th and early 20th centuries, civil engineering professionals began to develop the concept of sustainable construction.
