The units that are used <span>in space because metric units are too small would be: The astronomical Unit (A.U)
In space, the unit measurement is often used to measure the distance between planets or between stars.
Since the distance between these objects are very large, using metric units to measure it would be inefficient</span>
Answer: A sponsor agrees to help immigrants become a citizen.
Chemical weathering because it changes the chemical makeup of the substance.
I hope this helps, and I'm sorry if I get it wrong.