Time zones were adopted to fix what problem

Put these processes of the water cycle in the correct order, starting at the point where the water is in the lake: 1. water evaporates into the atmosphere 2. rain, snow, or other precipitation falls 3. water collects into larger bodies of water 4. water vapor condenses into liquid water

Which proportionality applies to avogadro’s law?

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?