What is savanah and xerophtic, tundra
SAVANNA
Savanna is an enormous plain with hills and forests. It has different names in the seperate parts of the globe from the equator to tropics.
Savanna is an enormous plain between moisture equator forests and tropical deserts. The biggest savannas are in Africa. It is 40% from it.
The grass in savanna grows 2-3 meters up and forests are thin. There are parts where trees are scarce. The most enormous tree is baobab that leaves are fallen down.
In the dry season there are strong evaporation and the tree leaves fall off, and grass and bushes wither. Because of that savanna looks like wheaten. It is often fires to flare up spreading to enormous areas. In the wet season grass grows up, and trees and bushes get green and everything is so nice.
If you have a walk in savanna you can see many animals - zebras, giraffes, elephants. You can also see beasts lying down on the grown. The king of the animals - lian also live in the savanna. and the biggest bird in the world - ostrich too.
TUNDRA
The tundra is a vast region of cold, mostly treeless lands extending along the entire margin of the Arctic Ocean. Because of the low temperatures, the ground is frozen (called permafrost, for permanently frozen ground). During the short summer, only the uppermost foot (30 cm) or less actually thaw. Under these conditions only the toughest plants can grow, and the typical tundra vegetation consists of grasses and shrubs, lacking the taller trees with deeper roots that are so common further to the South. The photograph on the right shows a low ridge in the tundra in Northern Alaska, with some willows growing at the edge of a pond. In the background you can see the Brooks Range, that separates the tundra from the forests (also called taiga or boreal forests) of interior Alaska.
XEROPHYTIC
Xerophyte, any plant adapted to life in a dry or physiologically dry habitat (salt marsh, saline soil, or acid bog) by means of mechanisms to prevent water loss or to store available water. Succulents (plants that store water) such as cacti and agaves have thick, fleshy stems or leaves. Other xerophytic adaptations include waxy leaf coatings, the ability to drop leaves during dry periods, the ability to reposition or fold leaves to reduce sunlight absorption, and the development of a dense, hairy leaf covering.
SAVANNA
Savanna is an enormous plain with hills and forests. It has different names in the seperate parts of the globe from the equator to tropics.
Savanna is an enormous plain between moisture equator forests and tropical deserts. The biggest savannas are in Africa. It is 40% from it.
The grass in savanna grows 2-3 meters up and forests are thin. There are parts where trees are scarce. The most enormous tree is baobab that leaves are fallen down.
In the dry season there are strong evaporation and the tree leaves fall off, and grass and bushes wither. Because of that savanna looks like wheaten. It is often fires to flare up spreading to enormous areas. In the wet season grass grows up, and trees and bushes get green and everything is so nice.
If you have a walk in savanna you can see many animals - zebras, giraffes, elephants. You can also see beasts lying down on the grown. The king of the animals - lian also live in the savanna. and the biggest bird in the world - ostrich too.
TUNDRA
The tundra is a vast region of cold, mostly treeless lands extending along the entire margin of the Arctic Ocean. Because of the low temperatures, the ground is frozen (called permafrost, for permanently frozen ground). During the short summer, only the uppermost foot (30 cm) or less actually thaw. Under these conditions only the toughest plants can grow, and the typical tundra vegetation consists of grasses and shrubs, lacking the taller trees with deeper roots that are so common further to the South. The photograph on the right shows a low ridge in the tundra in Northern Alaska, with some willows growing at the edge of a pond. In the background you can see the Brooks Range, that separates the tundra from the forests (also called taiga or boreal forests) of interior Alaska.
XEROPHYTIC
Xerophyte, any plant adapted to life in a dry or physiologically dry habitat (salt marsh, saline soil, or acid bog) by means of mechanisms to prevent water loss or to store available water. Succulents (plants that store water) such as cacti and agaves have thick, fleshy stems or leaves. Other xerophytic adaptations include waxy leaf coatings, the ability to drop leaves during dry periods, the ability to reposition or fold leaves to reduce sunlight absorption, and the development of a dense, hairy leaf covering.
