Evolution - A gradual process of change in living organisms over time, leading to the development of new species., Species - A group of organisms that can reproduce and have offspring., Adaptation - A trait that helps an organism survive in its environment., Environmental pressure - Changes in the environment that cause species to adapt or change over time., Direct evidence (of evolution) - Physical remains like fossils that clearly show changes in organisms over time., Indirect evidence (of evolution) - Clues such as anatomical structures and geographic distribution that suggest evolutionary changes., Fossil - Preserved remains or traces of organisms from the past (e.g., bones, shells, imprints)., Relict species - A living species that has survived from an earlier time and hasn’t changed much (e.g., coelacanth)., Transitional form - An organism that has traits of two different groups, showing a link in evolution (e.g., between fish and amphibians)., Vestigial organ - A body part that has lost its original function through evolution (e.g., human tailbone, palmaris longus muscle)., Homologous structures - Body parts in different species that have a similar structure but may serve different functions, showing common ancestry., Analogous structures - Body parts in different species that have similar function but different structure, not from common ancestry., Convergent evolution - The process where unrelated organisms develop similar traits due to similar environments.,

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