renewable B. eco-friendly C. environment D. sustainable
B
15
The mining project threatens one of the world’s richest areas of _______. A. collection B. variety C. biodiversity D. numerous
C
15
Visitors can wander around here without difficulty because most of the antique area is now a pedestrian _______. A. traffic B. crossing C. site D. zone
C
15
The holiday cottage has many green touches, including _______ cleaning products. A. friendly B. eco-friendly C. ecological D. economical
B
15
The Saudi government is investing billions in _______ to support the enormous influx of people in Mecca. A. streets B. roads C. bridges D. infrastructure
D
15
We must improve the environment through _______ design and greener buildings. A. sustainable B. lifelong C. harmless D. sustained