Biodiversity and EDP Review

Examples of how humans negatively affect local ecosystems are

• Building dams, deforestation (cutting down trees), adding point sources to nearby streams to allow for run-off, building roads and structures, and salting roads.
• Creating laws to prohibit fishing from local streams.
• Planting trees and other plants to attract native species.
• Removing non-native species from the environment.

All food chains_____________________

• have more consumers than producers
• produce and use same amount of energy
• begin with a producer
• are unhealthy 

How does energy enter an ecosystem? 

• sunlight
• soil 
• animals 
• invasive species 

What does biodiversity mean?

• Only one species in an area.
• The different amount of species in an area
• All abiotic life
• Nitrogen fixation

In this tundra food web, if grasses were removed what would happen to the sustainability of the ecosystem?

• There would be an overpopulation of arctic hares and lemmings.
• Polar bears would move to a new ecosystem
• The ecosystem would collapse because it lost its main producer
• Wildflowers would die out from the ecosystem

What is an advantage of a biodiverse ecosystem?

• Can withstand changes in resources

• Can recover more quickly from a natural disaster

• Can withstand the immigration of a new predator

• all of the above

Humans are causing extiction in which ways?

• By over hunting animals for food or products.
• By destroying the natural habitat of species.
• By polluting the environments of the world.
• All of the above.

Biodiversity leads to

• Increased Stability

• Decreased Stability

• Increased Exctintions

• Increased Endangered Species

If your first design doesn't solve the problem, you must go back and revise your plan. Which step is this?

• Share results
• Ask
• Improve
• Imagine

Tags

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

In which step would you review the design criteria and make adjustments to the original plan?

• Plan
• Create
• Improve
• Share results