Earth's Biomes

Front

Rainforests have ______ main layers.

Back

four

Front

Marine ______ supply most of the world's oxygen.

Back

algae

Front

True or False: Some of the animals that live in the canopy of the rainforest never need to touch the ground.

Back

True

Front

This biome has a thick layer of permafrost beneath the shallow soil. What is it?

Back

Tundra

Front

Marine biomes cover about ___________ of the Earth.

Back

three-fourths

Front

What is a biome?

Back

A biome is a large geographic biotic unit, a major community of plants and animals with similar life forms and environmental conditions.

Front

What are the main types of biomes?

Back

Terrestrial biomes (like forests, deserts, grasslands) and aquatic biomes (like freshwater and marine).

Front

What is the significance of the canopy layer in a rainforest?

Back

The canopy layer is home to a diverse range of species and plays a crucial role in the ecosystem by providing shelter and food.

Front

What is permafrost?

Back

Permafrost is a thick subsurface layer of soil that remains frozen throughout the year, found in tundra regions.

Front

How do marine biomes contribute to the Earth's oxygen supply?

Back

Marine biomes, particularly through algae and phytoplankton, produce a significant portion of the Earth's oxygen through photosynthesis.