Climate and vegetaion

• There are 7 biomes tropical forests, taigas, deserts, grasslands, savannah, tundras, temperate forests
• Tropical rainforests have high temperatures, heavy rainfall and no dry season.
• The tropical rainforest is the most diverse ecosystem on earth with over half of all species living there.
• Temperate deciduous forests have moderate temperatures, moderate rainfall and distinct seasons.
• temperate forests are found in polar regions and tropics
• Grasslands large ares of open grass, few vegetation maintained by veld fires and grazing
• Taigas are boreal or snow forest, coniferous forests, low temperatures
• Tundra vast flat treeless region soil is semi frozen all year round
• Savanna biome is an area of grasslands with dispersed trees or clusters of trees
• Rainforests are tropical moist broadleaf forests, warm humid climate, dense canopy, high biodiversity
• Deserts are hot, dry and wet with low precipitation and a few vegetation
• Summer temperature in deserts 35-40 degrees and winter 20-30 degrees
• During the day temperature reaches 50 degrees and at night up to 0 degrees celcius
• deserts have 250mm of rainfall per year
• Sahara is the largest desert in the world flowed by the Kalahari and Namib
• Plants in the desert are succulents and store water in leaves, roots or stems. The features of resisting high temperatures: Long tap roots are the underground or short life cycles
• Seed could remain dormant until rainfall in a desert
• There are 4 layers in the rainforest
• Forest floor- home to many species, bacteria, fungi, very dark and has predators
• Undrestory - layer below the canopy, has young trees and short species of trees, shrubs, ferns and creepers. sunlight can penetrate thru tress
• Canopy- Most light comes in, most animal species live in and has tall tress with thick branches
• Emeregent- the top layer of the rainforest, very tall trees and it is the roof of the rainforest were most sunlight is
• Buttress roots are roots that grow above the ground to give support to large trees and they interlock with neighbouring roots to create a network of support preventing soil erosion