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Earth Systems Activity

This activity guides students through building a conceptual model of how carbon dioxide affects Earth’s climate.

Paleoclimate: A History of Change

This interactive module examines Earth’s past and present climate, highlighting the effects of two important factors: solar radiation and the composition of the atmosphere.

Geological History of Oxygen

This interactive module explores how the changes in oxygen levels throughout Earth’s history have impacted the planet’s environment and types of life.

Greenhouse Effect

This animation provides an overview of the greenhouse effect, a process that warms the atmosphere and surface of Earth.

The Geologic Carbon Cycle

This animation explores how carbon enters the atmosphere and can be removed through a series of chemical reactions.

X Inactivation

This animation shows how X chromosomes are randomly switched off in most female mammals.