Populations studies

What will happen to the populations of seals, polar bears and penguins if the ice caps melt and they are unable to adapt? CHOOSE TWO

• Populations will increase

• Nothing will happen to the populations

• Populations will decrease

• Populations could go extinct

Which of the following are density dependent factors?

• competition for resources

• predation

• disease

• natural disasters

Which of the following are examples of a density independent factors?

• forest fire

• seasonal cycles

• storms

• disease

Which description is the best example of a population?

• all of the red foxes in a forest

• all of the red foxes in every forest

• all of the organisms in a forest

• all of the organisms in every forest

A person who estimates timber volume is called a

• Skidder
• Timber Cruiser
• Forest technician
• Logging foreman

Which sequence best orders ecological categories from the one with the fewest number of individuals to the one with the greatest number of individuals?

• ecosystem, population, community, biome

• population, community, ecosystem, biome

• biome, population, community, ecosystem

• community, biome, population, ecosystem

Marine

• freshwater

• saltwater

• land

• primary succession

• secondary succession

Biological Community

• biological community

• group of interacting populations that occupy the same geographic area at the same time

• all non-living factors

If the air is badly polluted with sulfur dioxide, a widely used indicator species is used to detect it. That bio-indicator is:

• E. coli
• bacteria
• lichens
• viruses