Explanation:
Moreover, increasing use of fossil fuels also causes serious environmental problems. Hence, there is a pressing need to use renewable energy sources like solar energy, wind, tide, biomass and energy from waste material. (i) it reduces the dependence on fossil fuels for energy. (ii) they donot produces pollution.
Answer:
A. Both freezing and melting are physical changes.
Explanation:
Even if you were to freeze water, the molecules are still water molecules, and vise versa with melting it.
Answer: Using a fan on a hot summer day. Explanation: the sweat that our body produces is for effective heat transfer. ...
Radiators in fridges, acs and automobiles. ...
Instant water heating geysers or any other geysers.
Explanation:
I have attached a photo of the structure.
You can get better at solving problems like this by practicing a lot!
