A scientist has a container with a substance inside. At first, the molecules in thesubstance move away from each other. Later, the
molecules move around each oter. What change did the scientist
observe in the substance?
Help pls

Can someone me with 3 and 4 plz. this is for masteries test.

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

What is the largest environment on earth?