Answer: 
Explanation: 1 gram is equal to 1000 Milligrams so

Since you go straight across its just multiplication so 0.00200x1000=200mg
To answer it in scientific notation it should just be
mg
Greater rainfall has an greater increase on the rate of chemical weathering. Rain is a form of precipitation.
Answer:
The hydrogen molecules combine with the oxygen molecules, 2 hydrogen molecules, and 1 oxygen molecules is the amount needed to make one water atom or molecule, whatever you want to call it.
swift to hear, slow to speak
Explanation:
I am sorry I don't know, points are points though