Unit 3 Test- Human Impacts on Earth

The sum of all natural and human changes in Earth's environment

• Geological Evidence
• Chemical Evidence
• Global Change

_____________________ reveals how humans have changed the earth. Changes in landscape, resources, and biodiversity can all be linked to human impacts.

• Geological Evidence
• Chemical Evidence
• Agents of Change

Humans change and shape the earth; therefore, humans are __________________________.

• Geological Evidence
• Chemical Evidence
• Agents of Change

This is the era marked by the increase in human's impact on Earth (since the early 1900's)

• Anthropocene Era
• Chemical Evidence
• Agents of Change

Increased levels of carbon dioxide in the atmosphere is an example of ______________________.

• Geological Evidence
• Chemical Evidence
• Agents of Change

Deforestation is an example of:

• chemical evidence of how humans have changed the Earth.
• geological evidence of how humans of changed the Earth.

Chlorine found in glacier core samples is an example of:

• chemical evidence of how humans have changed the Earth.
• geological evidence of how humans of changed the Earth.

Humans depend on their natural environment for medicine, energy, and recreation.

• True
• False

One way to measure human impact on the ecosystem is through the ecological footprint. An ecological footprint is the measure of human demand on the ecosystems.

• True
• False

The quality of human life is related to the quality of the environment.

• True
• False