<span>The reserves will eventually be used up. </span>
Answer:
It adapts to the changing climate
Explanation:
Species have to acclimatise to changing climate to enable them survive
A means of adaptation is key for survival of species during climate change
If species do not have acclimatisation strategy, they would not be able to survive the changing climate
With an insoluble outer layer which remains in the cell where it is formed until the energy is needed
D-walls and doors would represent the cell membrane