Chapter 6 Review (1-24)

Approximately what percentage of the Earths species do tropical rain forest contain?

50%

How might a mountain affect where particular types of biomes are located?

The higher up the mountain, the colder it gets. If animals can't live in cold climates, they won't be in that biome. Same goes for plants.

Well-preserved mammoths have been found buried in the tundra. Explain why the tundra preserves animal remains well.

The permafrost won't melt, therefore being the perfect place to preserve remains

What is the relationship between root systems and erosion in a grassland ecosystem?

The roots of crops are shallow so soil erosion eventually occurs

Unlike the jungles you see in movies, the floor of an undisturbed tropical rain forest usually lacks much vegetation. Explain why it lacks vegetation.

The soil of the rain forest is not rich at all, the nutrients are within the plants. Therefore, if there are no plants there are no nutrients.

Spadefoot toads survive the dry conditions of the desert by

burying themselves in the ground

The tundra is most suitable to a vertebrate that

can migrate hundreds of kilometers each summer

The most common types of plants in the taiga biome are...

coniferous trees

Animal species of the tropical rainforest...

have adaptations that minimize competition

Migration of animals in the savanna is mostly a response to

rainfall

Which of the following biomes contains large trees: - savanna - temperate rain forest - chaparral - desert

temperate rain forest

the two main factors that determine where organisms live are

temperature and precipitation