hydroponics is a method of growing plants without using soil. Instead, plants are grown in a nutrient-rich water solution that provides all the necessary nutrients for their growth.
Hydroelectric power
hydroelectric power refers to the generation of electricity from the energy of flowing or falling water. It is a renewable energy source that harnesses the gravitational force of water to generate power.
Hybrid vehicle
Hybrid vehicle is a type of vehicle that combines two or more power sources to propel it forward.
Hybrid renewable energy systems
Hybrid renewable energy systems, also known as hybrid power systems or hybrid energy systems, are energy systems that combine two or more renewable energy sources with the goal of improving efficiency, reliability, and cost-effectiveness.
Hypothermia
Hypothermia: A medical condition in which a person’s body temperature becomes abnormally low, usually because of exposure to cold air or water. Severe hypothermia can lead to death.
Hydroelectric dam
Hydroelectric dam: A power plant that uses the energy from moving water to produce electricity. Moving water spins a turbine, which is connected to a generator.
Heat wave
Heat wave: A long period of abnormally hot weather, typically lasting for several days.
Heat stroke
Heat stroke: A medical condition that results from being exposed to high temperatures. A person’s body temperature rises rapidly and he or she is unable to cool down by sweating.
Habitat
Habitat: The place or environment where a plant or animal naturally lives and grows.
Hydric
Hydric: having or characterized by excessive moisture.
Hemp
Hemp: is the common name for plants of the entire genus Cannabis, although the term is often used to refer only to Cannabis strains cultivated for industrial (non-drug) use. Industrial hemp is produced in many countries around the world. Major producers include Canada, France, and China. While more hemp is exported to the United States than to any other country, the United States Government does not consistently distinguish between marijuana and the non-psychoactive Cannabis used for industrial and commercial purposes.
Heath
Heath: a low evergreen shrub of the family Ericaceae; has small bell-shaped pink or purple flowers, a tract of level wasteland; uncultivated land with sandy soil and scrubby vegetation.
Halophile
Halophile: archaebacteria requiring a salt-rich environment for growth and survival.