Plant trees because they absorbe co2
Water is stored mainly in the central vacoule of a plant cell.
It flows through the consumers (first level second level so forth). However, at each level, it loses 90 percent of the energy as heat. So at each level, each consumer will only get 10 percent of the energy.
Narcotic drugs are analgesic that exert a depressing action on the central nervous system.
Hope this helps!