Basically physical and chemical weathering (do not confuse with erosion, which involves movement) contribute to the destruction of mineral forms. In this case it breaks down the rocks, minerals and soils, creating slopes and hills. It may be caused by (any form of) water, wind, gravity, waves or sunlight.
Uranus was officially discovered by Sir William Herschel in 1781
Uranus turns on its axis once every 17 hours, 14 minutes
Uranus makes one trip around the Sun every 84 Earth years
Uranus is often referred to as an “ice giant” planet
Uranus hits the coldest temperatures of any planet
Uranus has two sets of rings of very thin set of dark coloured rings
Uranus’ moons are named after characters created by William Shakespeare and Alaxander Pope
Farming typically employs the most Hispanic workers.
Answer:
because there might be changes in the future which could make the estimates unreliable for example war or decline in economy
Explanation: