Grass

Grass

Grasslands such as savannah and prairie where grasses are dominant are estimated to constitute 40.5% of the land area of the Earth , excluding Greenland and Antarctica . [6] Grasses are also an important part of the vegetation in many other habitats, including wetlands , forests and tundra . The Poaceae are the most economically important plant family, providing staple foods from domesticated cereal crops such as maize (corn), wheat , rice , barley , and millet as well as forage, building materials ( bamboo , thatch , straw ) and fuel ( ethanol ).

The grass carp ( Ctenopharyngodon idella ) is the species of fish with the largest reported production in aquaculture globally, over five million tonnes per year. [1] It is a large herbivorous freshwater fish species of the family Cyprinidae native to eastern Asia, with a native range from northern Vietnam to the Amur River on the Siberia -China border. [2] This Asian carp is the only species of the genus Ctenopharyngodon .