Need help ASAP what changes when moving downwards from fluorine to chlorine on the periodic table

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.

Which of these is an intensive property of a substance

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.