Answer: I would have to say the living room needs to be cleaned- because a robotic vacuum cleaner.
• Also It could be possible for a hockey player to use bungee cords to keep tension on his/her arms while practicing his/her shot to strengthen it.
Cause it does not have to be followed by and believed by the theory itself.
Answer:
Greenhouse Effect
Explanation:
This is called Greenhouse Effect because it is the same concept applied on Greenhouses to grow plants in any time of the year.
