WED in Texas Ecoregions CFU

Which ecoregion includes the Chihuahuan Desert, the Guadalupe Mountains, and the Davis Mountains?

• Trans Pecos

• Big Bend

• Rio Grande

• Presidio

What are the main agents of erosion in the Big Bend National Park?

• Wind and water

• Flash-flooding and rapid runoff

• Acid rain and earthquakes

• Human activities and animal movements

What is the cause of erosion of the limestone cliffs in the Big Bend National Park?

• Flash-flooding

• Rapid runoff

• Acid rain

• Wind

Why is the soil in the Big Bend Regions eroded?

• Due to the abundance of wildlife

• Because of the decline of grasslands

• Due to urban development

• Because of the increase in tourism

What type of vegetation is abundant in the Piney Woods ecoregion?

• Desert cacti

• Pine forests and grasses

• Tropical rainforests

• Arctic tundra

What helps to inhibit river erosion in the Piney Woods?

• Sparse vegetation

• Thick areas of vegetation

• Urban development

• Frequent wildfires

What is the texture of the soil in the Piney Woods region predominantly?

• Loamy and fertile

• Coarse textured sands

• Rocky and infertile

• Rich in volcanic ash

How is the soil in the Piney Woods region formed?

• From volcanic activity

• From river silt deposits

• From weathered granite

• From glacial movements

What natural process occurs along riverbanks in the Piney Woods ecoregion?

• Seasonal flooding

• Frequent droughts

• Heavy snowfall

• Sand storms

What are the Gulf Coast Plains and Marshes subject to in terms of geological processes?

• Only weathering

• Only erosion

• Only deposition

• Weathering, erosion, and deposition