Ecology Midterm Review

What soil texture category do you get with 70% Clay, 20% Silt, and 10% Sand?

• Sandy Clay

• Clay

• Silt Loam

• Loam

What soil texture category do you get with 40% Clay, 10% Silt, and 50% Sand?

• Sandy Clay

• Clay

• Silt Loam

• Loam

What soil texture category do you get with 10% Clay, 60% Silt, and 30% Sand?

• Sandy Clay

• Clay

• Silt Loam

• Loam

Which soil particle is the largest in size?

• Sand

• Clay

• Silt

Which soil texture drains the slowest?

• Sandy

• Clayey

• Silty

Answer explanation

Clay is the smallest soil particle and compacts the most. As a result, water moves very slowly through soil with lots of clay.

What is something that is abiotic in this image?

• Air

• Water

• Tiger

• Grass

Answer explanation

In an ecosystem, abiotic components are all nonliving things.

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What is biotic in this picture?

• Cactus

• Clouds

• Shrubs

• Sunlight

Answer explanation

In an ecosystem, biotic components are the living things.

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Environmental science is the study of...

• the systems in the environment

• natural health remedies

• how to save the environment from itself

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Introducing an invasive bug species disrupts which natural cycle?

• Seasonal changes

• Nitrogen cycle

• Water cycle

• Food web

• All of these

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Trees are a part of which natural cycle(s)?

• Food web

• Nitrogen Cycle

• Water cycle

• Carbon cycle

• All of these

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