Charles Darwin
Naturalist who developed the theory of evolution.
HMS Beagle
Darwin's ship for his five-year voyage.
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Charles Darwin
Naturalist who developed the theory of evolution.
HMS Beagle
Darwin's ship for his five-year voyage.
Galapagos Islands
Location where Darwin studied diverse organisms.
Saddleback Tortoises
Tortoises with long necks for reaching high vegetation.
Domed Tortoises
Tortoises with protective shells for wet environments.
Intermediate Tortoises
Tortoises with features between saddleback and domed.
Pinta Island
Home to medium-sized tortoises with varied diet.
Isabela Island
Largest Galapagos island with abundant vegetation.
Hood Island
Small, dry island with limited food resources.
Artificial Selection
Intentional breeding for desired traits over generations.
Natural Selection
Survival of organisms best adapted to environment.
Overproduction
Species produce more offspring than can survive.
Variation
Inherited traits that enhance survival chances.
Competition
Struggle among individuals for limited resources.
Fitness
Ability to survive and reproduce successfully.
Selection
Survival of individuals with advantageous traits.
Evolution
Change in gene frequency in a population over time.
Fossil
Preserved remains indicating historical life forms.
Sedimentary Rocks
Rocks containing layers where fossils are found.
Pangea
Ancient supercontinent that existed millions of years ago.
Plate Tectonics
Movement of Earth's plates causing geological changes.
Embryology
Study of early developmental stages of organisms.
Adaptation
Changes that improve survival in specific environments.
Mimicry
Imitating another species for survival advantages.
Camouflage
Blending into the environment to avoid detection.
Descent with Modification
Species evolve from common ancestors with changes.
Common Descent
All living organisms share a common ancestor.
Cladistics
Diagram showing evolutionary relationships among species.
Homologous Structures
Similar structures in different species from common ancestry.
Vestigial Structures
Remnants of organs that no longer serve a purpose.
Biochemical Evidence
DNA similarities indicating close evolutionary relationships.