Answer:
Wetlands are places which contain more moisture content than the arid or dry land. It is believed that the wet region have less strength . As we all know anything which is in contact with water have lesser strength due to water molecules harm the chemical bonding in the object.
Ancient times house construction was done using natural rocks and stones and which reacted using physical bond hence the ancient people were successful as it used physical reaction and hence its strength was not affected by the moister. Present day homes are built using chemical bonds which told two layers adhere hence moisture affect its strength and binding.
Answer:
The properties of the asthenosphere are:
1. highly viscous
2. mechanically weak
3. ductile region of the upper mantle of the Earth
Renewable: trees, air, water
Nonrenawable: coal, oil, metals
