Which physical system can be affected by the outside environment? A. Open System
B. Closed System
C. Chemical System
D. Sprague System
Please help I offer 30 points

2. how is heavy water different from normal water

What is the correct term for living the most sustainable life you can within your current circumstances?

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds