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Grade 9 Science · Biology

Biomes and aquatic ecosystems

See how latitude, temperature and rainfall shape the world’s biomes, from rainforest to tundra.

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sunlight (equinox)small area: strongspread out: weakerpolartemperatetropicaltemperatepolar66.5° N23.5° N23.5° S66.5° S
Near the equator it is warm all year.
With heavy rain all year: tropical rainforest, the most species of any biome.
With a long dry season: savanna, grassland with scattered trees.

Assumptions

•
A biome is a large region with a similar climate, and so similar plants and animals.
•
Temperature and rainfall decide the biome; both change with latitude, and temperature with height.
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