Biomes

Biome is Biological or any ecosystem. They are composed of physical factors such as temperature, humidity, and biological factors, such as plants and animals are similar spread in different geographical regions.

A biome is a collection of ecosystems sharing similar climatic conditions.

Biome can separate into 2 different kinds 

1:Biome on land 

2:Biome under the water 

Biome on land divided into 7 categories.

             1 Biome Tropical Rain Forest

             2 Biome in the tropical deciduous forest

             3 Biome Forest

             4 Biome the temperate grasslands.

             5 Biome Savannah

             6 Biome of the sea

             7 Biome Tundra

Biome in water divided into 3 types.

             1 Biome freshwater

             2 Biome sea

             3 Biome brackish water

Tri Cellular Model of Atmospheric circulation

the tri cellular model helps explain the differences of in pressure belts, temperature, and precipitation that exists

Can be divided into three major cells 

• Hadley -> Control weather over the tropics, where the air is warm and unstable
•  Ferrel 
• Polar

Tropical rainforest

• Rain forests have a very high diversity of animals and plants where they may have up to 480 species of trees
• It has constant high temperature and high rainfall throughout the year
• Estimated to produce 40 per cent of NPP of terrestrial ecosystems.

Tundra

• Most of the world’s tundra is found in the north polar region, aka arctic tundra.
• Rates of photosynthesis and productivity are low.
• The amount of water are also limited because the formation of ice

Dessert

• They cover 20-30 percent of land surface.
• Limits rates of photosynthesis and so rates of NPP are very low.
• Species in there are adapted, showing many xeophytic adaptations (adaptation to reduce water loss in dry conditions)

Temperature Forest

• Forest might contain only deciduous trees, only evergreens, or a mixture of both.
• Diversity is lower than in rainforest and the structure of temperate forest is simpler.
• Seasonal (has summer and winter) so there are two different tree types: evergreen (warm) and deciduous (cold)

Grassland

• Develop where there is not enough precipitation to support forests, but enough to prevent desert forming
• They are found in areas where the polar and Ferrel cells meet (mix the cold and warm air)
• Grasses grow beneath the surface and during cold periods, it can remain dormant until the ground warms.