Succession and Human Impact (5)

succession that occurs in an area with no soil

• ecological succession

• primary succession

• secondary succession

• pioneer species

succession that occurs in an area where soil is already present

• ecological succession

• primary succession

• secondary succession

• pioneer species

the first organisms that appear in an ecological community

• ecological succession

• primary succession

• secondary succession

• pioneer species

How do lichens contribute to primary succession?

• Lichens decompose organic matter from animals and plants
• Lichens begin to break down rock to form soil
• Lichens are nitrogen fixing bacteria

Tags

NGSS.MS-LS2-3

Which ecosystem most likely has the greatest biological diversity?

• a tundra region that has many penguins

• a pine tree in which three groups of birds live

• a rain forest that has many different types of plants and animals

Which term best describes the number and variety of organisms in a given area?

• Pioneer species

• Urbanization

• Biodiversity

• Population

When human-made chemicals and garbage find their way into nature and harm the air, soil, and water it is called

• pollution

• habitat destruction

• overexploitation

• climate change

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

Most water pollution is caused by

• human activities.

• drought.

• volcanic eruptions.

• storms.

What is the major cause for air pollution?

• factory and car emissions

• cigarretes

• deforestation

• oil spills

Pollution from cars and factory emissions produces something called acid rain.

• True

• False