8.11B

          An earthworm farmer wanted to grow three species of earthworms, but earthworms can be very picky about the temperature, moisture, and pH balance of their soil. This graph shows the range of soil conditions preferred by three species of earthworms in an earthworm soil bed. 
          Which of these conditions would cause the most competition for the resources among the three species of earthworms?

• Very warm soil, ph of 6, and dry.
• Very cold soil, pH of 7, and high moisture.
• Moderate temperature, pH of 6.5, and moderate moisture.
• Moderate temperature, pH of 7.0, and high moisture.

Bromeliads are small plants that grow attached to the sides of large trees high above the ground in warm, damp and densely crowded tropical rainforests. Bromeliads do this because they are in competition with other plants for -

• soil.
• heat.
• light.
• water.

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NGSS.MS-LS2-1

     The Black-banded Sea Krait is found in the warm waters of the Pacific Ocean. It is well adapted to the environment in which it lives.          Which of these resources is most likely limited in the Black-Banded Sea Krait's environment?

• Land
• Coral dwelling fish
• Water
• Coral

(8.11B) The Couch's spadefoot lives in Texas and his the characteristics listed below.
The Couch's spadefoot is adapted to a certain type of environment. Which of these resources is most likely scarce in this environment?

• Soil
• Sunlight
• Water
• Oxygen

A park is home to a large number of robins, squirrels and rabbits. The robins and squirrels live in the park’s trees. The robins feed on earthworms and insects that live on the ground. The squirrels eat the acorns produced by the park’s oak trees. The rabbits hide in the bushes and feed on the grass. Which factor would negatively impact the number of rabbits living in the park?

• Collecting acorns off the ground.
• Planting more trees.
• Removing park bushes.
• Removing the squirrels.

Tags

NGSS.MS-LS2-1

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Highways allow people to travel between towns and cities, but it also divides ecosystems into smaller pieces. Animals can become separated from lakes they use for food and shelter. For example, tiger salamanders use lakes for these reasons. How could the building of highways affect animals such as the tiger salamander?

• Tiger salamanders could improve lake ecosystems.
• Tiger salamanders may be cut off from important resources.
• Tiger salamander habitats may have less pollution.
• Tiger salamander habitats within ecosystems would become larger.

Tags

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Which is NOT an abiotic factor:

• Soil
• Air
• Bacteria
• Water

Which two organisms in this food web are COMPETING for food with each other?

• Cougar and Deer
• Rabbit and Snake
• Insects and Grass
• Shrew and Mouse

Tags

NGSS.MS-LS2-4

If the grasshopper were to be removed completely from the food web, what organism would be most affected?

• The squirrel

• The shrew

• The deer

• The rabbit

Tags

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Temperature, light, air, water, and climate are all __________ factors of the environment. 

• biotic
• abiotic