Biomass is fuel that is developed from organic materials, a renewable and sustainable source of energy used to create electricity or other forms of power. Some examples of materials that make up biomass fuels are: 1  scrap lumber; 2  forest debris; 3  certain crops;
At most, some flowers linger into part of the following day. A large cereus cactus may have several blooms, but the plant's entire bloom season may last only two days. Some genera bloom in spring or summer, while others flower in early fall.
their stems can grow to be 15 feet 4 6 m high and 8 inches 20 cm in diameter stems of mature plants are covered with long stiff grey spines which inspired its common name old man cactus during the hot summer months the beautiful pink flowers open after sunset and close before the following dawn