Answer:
C) gemstones
Explanation:
Nonmetallic minerals (known as gemstones) such as diamond, emerald, topaz, ruby, agate, malachite, turquoise, jasper, and so on are of great importance in automobile industry and other industries of the world. Thus, there is increase in demand for them. This makes them to have the highest market value.
Answer: wind, water, and gravity.
Explanation:
Frequency of the light wave
Answer:
Infiltrate rate decreases and also water quality.
Explanation:
There is adverse effect of erecting buildings and concrete pavement on the recharge of aquifers and the quality of the water because the water is unable to infiltrate inside the soil due to concrete floor and the recharging of aquifers is not possible. These buildings and concrete pavements also reduces the quality of water due to degradation of sediments present in the building with the passage of time.
