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A leaf (pl.: leaves) is a principal appendage of the stem of a vascular plant, [1] usually borne laterally above ground and specialized for photosynthesis.Leaves are collectively called foliage, as in "autumn foliage", [2] [3] while the leaves, stem, flower, and fruit collectively form the shoot system. [4]
The emergent layer, above the canopy, exists in tropical rainforests. Each layer has a different set of plants and animals, depending upon the availability of sunlight, moisture, and food. The Forest floor is covered in dead plant material such as fallen leaves and decomposing logs, which detritivores break down into new soil. The layer of ...
Argentina, [C] officially the Argentine Republic, [A] [D] is a country in the southern half of South America.Argentina covers an area of 2,780,400 km 2 (1,073,500 sq mi), [B] making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world.
Martial law is the replacement of civilian government by military rule and the suspension of civilian legal processes for military powers. [1] Martial law can continue for a specified amount of time, or indefinitely, and standard civil liberties may be suspended for as long as martial law continues.
The banana plant is the largest herbaceous flowering plant. [2] All the above-ground parts of a banana plant grow from a structure called a corm . [ 3 ] Plants are normally tall and fairly sturdy with a treelike appearance, but what appears to be a trunk is actually a pseudostem composed of multiple leaf-stalks ( petioles ).
Its root system is generally shallow, so the plant is dependent on soil moisture. As a plant that uses C 4 carbon fixation, maize is a considerably more water-efficient crop than plants that use C 3 carbon fixation such as alfalfa and soybeans. Maize is most sensitive to drought at the time of silk emergence, when the flowers are ready for ...
In northern Finland, particularly in Lapland, the winters are long and cold, while the summers are relatively warm but short. On the most severe winter days in Lapland can see the temperature fall to −45 °C (−49 °F). The winter of the north lasts for about 200 days with permanent snow cover from about mid-October to early May.
Bergen County is the most populous county in the U.S. state of New Jersey. [8] Located in the northeastern corner of New Jersey, Bergen County and its many inner suburbs constitute a highly developed part of the New York City metropolitan area, bordering the Hudson River; the George Washington Bridge, which crosses the Hudson, connects Bergen County with Manhattan.