Answer:
600,000
Explanation:
In order to convert meters or metre to millimeter or millimetre, you must multiply the meter/metre by 1000. (Some countries say meter and others say metre.) Hope it helps! <3
Answer:
1 and 2 only
Explanation: These will make a bad impact on water.
Answer:
oxygen ion.
An oxygen ion has 8 protons and 10 electrons.