True! Earth is beginning to become very overcrowded and combined with the amount of people of the planet and the carelessness that they all have for it, the earth is slowly beginning to show it's age. Of course, no one will act on this opinion, because it is quite illegal to just kill people, but it is true!
Cell structures that are in plant cells are cell walls, central vacuole, and chloroplast.
B. Stems absorbed water and minerals from soil
Hope this helps! :)