Topic 7 Human Impact

What is the difference between biotic and abiotic?

• Biotic are non-living things
• Abiotic are living organisms
• Biotic is life,
  Abiotic is non-living
• Biotic is non-living, Abiotic is living

Tags

NGSS.MS-LS2-3

What does biodiversity mean?

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

Tags

NGSS.MS-LS2-5

Which option is abiotic?

• Plants
• Bacteria
• Water
• Fungi

Tags

NGSS.MS-LS2-3

Which option is abiotic?

• Plants
• Rocks
• Animals
• Fungi

Brown trout consume more tadpoles when the fly larvae reduce in number. This proves...

• The dependence of organisms and biodiversity in an ecosystem

• Diversity increases as organisms decrease

• Losing an animal is good for ecosystems

• Changes in ecosystems create new organisms

In this tundra food web, if grasses were removed to make way for hunting cabins, 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 human activities have influenced recent extinction events?

• habitat destruction

• introducing exotic species

• poaching

• all of these

Reasons for preserving biodiversity include all of the following EXCEPT

• isolating unique genetic material so it can be incorporated into existing crops.

• increasing the chances of discovering organisms with medicinal value.

• preventing natural evolution or for poaching

• finding new plants that can supplement the world’s food supply

Where are many critical Biodiversity Hotspots located?

• cities and developed areas of the world

• islands, tropical rain forests, and coastal areas

• desert and polar environments

• all of these

Hunting wolves in Yellowstone National Park resulted in -

• an increase in biodiversity.

• a decrease in biodiversity.

• complete influx of different organisms

• beneficial changes in the geography in the land.