Ecology 101 PreTest

Savanna is considered a transitional biome because it is intermediate between two _______.

biomes

Only the water of marine ecosystems contains dissolved salt.

False

In which biome would you be most likely to enjoy leaves changing color in the fall?

Temperate Forests

Freshwater ecosystems can be found within terrestrial ecosystems.

True

Biomes are defined by specific characteristics. What characteristics would define the biome shown? (picture of desert sand dunes)

hot and dry with low-growing shrubs

Which ecosystem contains 32% of the world's producers?

marine ecosystem

In general the warmest biomes in the world are found _______.

near the equator

Environments are covered with manmade structures like roads, buildings, and sewers. Green spaces such as parks, backyards, and undeveloped lots are scattered in among the developed areas instead of all connected together. Plants and animals have to deal with exposure to toxins from vehicles and loss of habitat and food sources. These are all ways that _______.

nonhuman life in an urban ecosystem differs from that in an undeveloped forest ecosystem

The proper order, from smallest to largest, for the levels of organization is _______.

organism, population, community, ecosystem, biome, biosphere

Which of the following is not a freshwater ecosystem?

seas