Risultati di ricerca
20 ore fa · The Great Green Wall is a new swath of trees being planted across the African Sahel, one of the poorest regions in the world. It aims to restore 100 million hectares of degraded land and combat the area’s increased desertification, drought, and food insecurity.
5 giorni fa · A forest is a complex ecological system in which trees are the dominant life-form. A forest is nature’s most efficient ecosystem, with a high rate of photosynthesis affecting both plant and animal systems in a series of complex organic relationships.
3 giorni fa · First, around the Lombard lakes, the most common trees are the evergreen cork oak, the European olive, the cypress, and the cherry laurel. Slightly higher, on the mountain plain, the beech is ubiquitous , giving place gradually to the deciduous larch and the Norway spruce.
5 giorni fa · Instead, most of northern Africa was covered by grass, trees, and lakes. The African humid period (AHP; also known by other names) is a climate period in Africa during the late Pleistocene and Holocene geologic epochs, when northern Africa was wetter than today.
4 giorni fa · However, the other green fuels on offer also spark other concerns. Ammonia is a highly toxic, corrosive and flammable fuel , according to the Global Maritime Forum, a non-profit based in Denmark ...
2 giorni fa · The dominant tree groups today are all seed plants, the gymnosperms, which include the coniferous trees, and the angiosperms, which contain all fruiting and flowering trees. No free-sporing trees like Archaeopteris exist in the extant flora.
1 giorno fa · The olive tree, Olea europaea, is an evergreen tree or shrub native to Mediterranean Europe, Asia, and Africa. It is short and squat and rarely exceeds 8–15 m (25–50 ft) in height.
