This section explores how organisms interact with their environment and respond to changes. When environmental conditions shift, organisms have three primary options for survival.

Definition: Adaptation is the process of changing in response to new environmental conditions.

Example: When faced with climate change, animals might migrate to cooler regions, adapt to warmer temperatures, or face extinction.

Jean-Baptiste Lamarck's pioneering work on evolution presented three key principles about how organisms change over time.

Highlight: Lamarck's theory, while ultimately incorrect in some aspects, was groundbreaking for its time and helped pave the way for Darwin's work.

Definition: The "use and disuse principle" suggests that frequently used body parts become stronger while unused parts deteriorate.

This section details Darwin's educational journey and early career, showing how his initial academic struggles led to his eventual scientific breakthrough.

Quote: "At the age of 16 entered medical school in England and flunked out."

Darwin's transformative journey aboard the HMS Beagle lasted five years and provided the foundation for his revolutionary theories.

Highlight: The expedition, particularly his time in the Galapagos Islands, proved crucial for developing his theory of evolution.

This page presents a detailed map of the Galapagos Islands, showing the various locations Darwin visited during his research.

Vocabulary: The Galapagos Archipelago consists of multiple islands, each with unique ecosystems and species.

Darwin's detailed study of Galapagos finches revealed crucial evidence for his theory of evolution.

Example: The variations in finch beak shapes demonstrated adaptation to different food sources on different islands.

This section outlines Darwin's four main theoretical principles about evolution and species development.

Highlight: Darwin proposed that all modern species descended from common ancestors through gradual change over millions of years.

This page details the mechanism of natural selection as the primary driver of evolution.

Definition: Natural selection is the process by which organisms with favorable traits survive longer and reproduce more successfully.

This section acknowledges Darwin's role as the Father of Evolution while noting Russell Wallace's concurrent discoveries.

Quote: "He allowed Darwin to take credit for their ideas."

The four main factors that drive natural selection are introduced here, providing a framework for understanding evolutionary change.

Highlight: These forces work together to shape species adaptation and survival.