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Throughout the Northern Hemisphere, In North America there is a retracting biome of the Tundra and Alpine and similarly in Asia. In areas of Northern Africa has a retracting biome of the Tropical Grassland. However in the Southern Hemisphere, such as in New-zealand the  retracting biome are Temperature Broad leaf Forest.

Throughout the Northern Hemisphere such as in  North America and Asia there are expanding biomes of the temperature Broad Leaf Forest. Africa has an expanding biome of the tropic woodlands and New Zealand has a  expanding biome of Temperate Shrub-land.

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Retracted biomes in south and northern africa
Tundra and alpine biomes are retracted

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In the north particularly Alaska ice biomes are retracting and conifer/mixed forest biome is expanding.
In the sub-saharan Africa the desert is retracting and tropical woodland is expanding this isn't a large area, and is most likely because of the initiative to prevent the desertification of the area.

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- retracting biomes: tundra and alpines especially in North America, Northern Europe & Northern Russia
- Expanding: temperate regions. Desert biomes expanding in Northern Africa and Middle East

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retracted biomes:
- South and North Africa, Australia, desert biomes
- North America has tundra and alpine biomes
expanding biomes:
- South America, conifer and broadleaf forest

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-Tundra and alpine biomes are retracting in North America and Northern Europe
-Desert biomes expanding in North Africa
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Expanding:
- Desert biomes are more common in the northern hemisphere and are expanding in areas such as Northern Africa and the Middle East. This is due to the high air pressures since these areas are located where dense cooler air comes down.
Retracting:
- The tundra biomes are retracting in areas far up north such as North Russia and North Canada. This may be due to global warming and the melting of snowcaps and glaciers

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Retracting Biomes: is located in Sub Saharan Africa, Most parts of Europe are in the tundra and alpines biomes.

Expanding biomes: located in areas such as Canada, New Zealand w

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In general, the tundra and alpine biome appears to be retracting the most as seen in large parts of Northern America, Northern Europe and Northern Russia. In regions such as Africa and New Zealand however, tropical woodland biomes are retracting.

Nevertheless, Boreal conifer forest biomes seem to be expanding in the Northern Hemisphere

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- the retracting biomes are tropical woodland biomes in the sub-saharan region of Africa, temperate mixed forest in North America and temperate conifer forest in Europe
- the expanding biomes are temperate mixed forest in Canada, temperate conifer forest in New Zealand

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retracting biomes:
- tundra and alpines are retracting almost everywhere: especially in North America, Northern Russia, Europe
- Tropical woodlands are refracting in Northern Africa
expanding biomes:
- deserts are expanding in Africa
- temperate mixed forest expanding in North America and Europe
Reason for tundra retracting: increase in glacial retreats and ice caps melting due to global warming
reason for increase in deserts: due to the average temperature being higher, there is an increase in deserts rather than tropical woodlands in Africa.

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Retracting in Northern Africa, Southern and Northern Europe in the tundra and alpines.
Expanding biomes are in temperature regions such as places with mixed forest located in Canada as well as temperature conifer forests in New Zealand.
Shifts in biomes are probably due to alterations in temperature and precipitation patterns due to climate change. A large factor contributing to this is increase industrialisation & gas emissions.