NGSS.MS-LS2-4

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

Tags

NGSS.MS-LS2-4

Deer are introduced into a grassland ecosystem and their population increases considerably. If the deer population continues to grow, which is the most likely outcome for the ecosystem?

• Biodiversity would decrease, and sustainability would decrease.
• Biodiversity would decrease, and sustainability would increase.
• Biodiversity would increase, and sustainability would increase.
• Biodiversity would increase, and sustainability would decrease.

Tags

NGSS.MS-LS2-4

Ten brown mice and ten white mice are placed in a desert environment. What will happen to the white population over time?

• It will increase
• It will decrease
• It will stay the same
• There is no way to tell

Tags

NGSS.MS-LS2-4

What is the role of LORAX in the story?

• the entrepreneur (business man)

• the environmentalist (cares for environment)

Tags

NGSS.MS-LS2-4

If a disease strikes the snakes the grass will

• increase

• decrease

• not be affected

Tags

NGSS.MS-LS2-4

In the 1850s, Thomas Austin released approximately twenty-four rabbits from Europe into the Australian countryside. By 1900, tens of millions of rabbits were found all over the Australian continent. The warm Australian climate, abundant farmland, and crops provided the perfect habitat for the rabbits. The rabbits caused extensive damage to all vegetation, and the lack of plants increased soil erosion. What biotic factor caused the Australian environment to change? 

• climate
• erosion
• producers
• rabbits

Tags

NGSS.MS-LS2-4

How can a hurricane cause damage to a marsh ecosystem?

• death of organisms from fire caused by lightning

• loss of plant life caused by saltwater from the storm

• Increase in biodiversity

• subsidence

Tags

NGSS.MS-LS2-4

Invasive species --- [choose 3]

• take over the habitat of other organisms.

• increases the populations of native organisms.

• decrease biodiversity.

• increase biodiversity.

• cause the populations of native organisms to decrease.

Tags

NGSS.MS-LS2-4

How do nutrients affect the Chesapeake Bay?

• Increases pollution

• decreases habitats

• increases algae

• increases runoff

Tags

NGSS.MS-LS2-4

Mud and sand are constantly moving, so very few algae and plants can establish in which biome?

• Taiga

• Coral Reef

• Worms

• Beach

Tags

NGSS.MS-LS2-4