Question

What are disadvantages of renewable energy?
A.They are eco-friendly
B.They cannot be used in war
C.Proper equipment to convert those energy into useful form is not available easily
D.They are not non-renewable

Answer 1

Hint: The energy resources are classified based on the time they take to replenish and if they are replenished within the timeframe reasonable enough for humans to use again and the rate of replenishing can keep with the rate of consumption.

Complete step by step answer:
Renewable resources are the natural resources that can be used without being depleted, i.e. their rate of replenishing is comparable to the rate of consumption. Some of the known and most common renewable energy resources are Air, Water, Sunlight, and geothermal energy. One of the primary advantages of renewable energy resources is that they are eco-friendly as their sources generally are non-polluting and they don’t cause any adverse effect on nature. Renewable resources though not highly useful in time of war but can provide utility if we use solar energy to provide electricity at places where it cannot be provided through a normal distribution system. One of the disadvantages for the renewable energy resource is that the equipment available for harnessing these resources are not easily available and those available are not as efficient as their non-renewable counterparts. For example, geothermal energy is a good source of heat energy but the cost of setup to utilize them is very high.
Hence option C is correct.

Note:
Renewable resources are having less efficiency than their non-renewable counterparts and currently their share in energy usage is around 20% with efforts being done to utilize more and reduce the dependency on non-renewable energy sources. Some of the non-renewable energy resources are Coal and petroleum