Answer:
The endosymbiotic theory states that some of the organelles in eukaryotic cells were once prokaryotic microbes.
I think it would be the sclereids cells
D. Polar regions receive less solar energy and heat per unit area than tropical regions
Less direct sunlight means that there is less concentration of direct solar rays. This would influence temperature and would ultimately create weather, and since this pattern continues of switching direct ray latitudes, this would create climate zones all over the Earth, and similar ones with similar latitude and terrain.
