Why does it make sense for scientist to test just one variable at a time in an experiment?

Why does bubbling occur when vinegar mixed with baking soda

Aprocedure done under controlled conditions to test a hypothesis is an inquiry.

Match the correct terms to their descriptions a system in which only energy but not matter is exchanged frozen water in snow part of geosphere that includes only soil a thin layer between the troposphere and the stratosphere cryosphere tropopause closed system pedosphere