Environments/Biomes/Natural Resource

What is an ecosystem?

• a place where living things depend on each other and the environment for survival

• a tree that decays and crumbles

• a place where plant or animals live

• extreme changes that can cause species to die out

Which three are examples of an ecosystem?

• desert

• forest

• a river

• plastic

how do nature and people change ecosystems

• through the connection of living things and the environment

• through their habitat

• through plants and animals

• through small changes that affect the system, such as drought or clearing land.

why can plants and animals not live everywhere?

• they don't want to

• They are adapted to specific environments.

• because of the decayed plant and animal matter

• to show dominance

how is a biome different from an ecosystem?

• there is no difference

• a biome contains several ecosystems and an ecosystem there is only one

• an ecosystem can be as small as a garden or a pond; and a biome is much larger and may contain several ecosystems

• a biome is smaller and an ecosystem is larger

What is the definition of humus?

• decayed plants and animals

• living plants and animals

• the balance in an ecosystem

• the many resources it gives to animals and plants

what actions can cause desertification?

• non-renewable resources

• natural resources

• the upset balance in an ecosystem

• erosion, or planting the same crops over and over again; the soil can no longer support plant life

Why is it important for geographers and scientists to study soils?

• the three layers of soil determine the conditions

• soil determines which plants can grow; and plants are the basis for all animal food

• the soil factory is a natural resource

• it's not important for them

What forms an ecosystem?

• the weather and soil conditions in an area

• the types of plants and animals found in an area

• the interconnection between air and water in an environment

• the interconnection between living things and the environment

Why do soils play an important role in the environment?

• because they said erosion

• because they support plant life

• because they prevent desertification

• because they contain valuable minerals