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Bighorn Sheep Ecosystem Dynamics

Bighorn Sheep Ecosystem Dynamics

Assessment

Interactive Video

Biology, Geography, History

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video explores the history and challenges of North American sheep, focusing on the Sierra bighorn sheep. It discusses the impact of human activities and grazing on ecosystems, leading to habitat changes and increased predation by mountain lions. Archaeological studies provide insights into past ecosystems, revealing how grazing has transformed grasslands into sagebrush steppes, affecting the survival of bighorn sheep.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What event led to the separation of sheep into two distinct populations in North America?

The arrival of European settlers

The last glaciation

The crossing of the Bering Land Bridge

The introduction of domestic livestock

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What factor contributed to the decline of Sierra bighorn sheep populations in the 1980s?

Increased hunting by humans

Introduction of invasive plant species

High levels of mountain lion predation

Severe drought conditions

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the primary focus of Robert Bettinger's archaeological studies?

The impact of climate change on ecosystems

The spread of culture in Western North America

The migration patterns of bighorn sheep

The introduction of domestic livestock

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the dominant prey species in the highland archaeological record?

Mountain sheep

Mountain lions

Bison

Deer

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What major change in vegetation occurred due to grazing by domestic livestock?

Desertification of the region

Expansion of grasslands

Transformation to sagebrush steppes

Increase in forested areas

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the primary cause of the transformation from grasslands to sagebrush steppes?

Natural forest fires

Climate change

Grazing by cows and sheep

Invasive plant species

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role do mountain lions play in the altered ecosystem?

They have no significant impact

They primarily prey on bighorn sheep

They are dependent on deer populations

They help control invasive plant species

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