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Natural Selection

TermDefinition
Charles Darwin a scientist who developed the theory of evolution by natural selection after studying how living things vary and adapt over time
Migration the movement of people, animals, or organisms away from their usual place of residence to a new location
adaptation a biological trait that helps an organism survive in its environment
habitat the natural environment where a species lives, grows, and meets its basic survival needs
natural selection the process where organisms with heritable traits better suited to their environment survive longer and reproduce more, causing those advantageous traits to become more common over generations
hypothesis a proposed, testable explanation for a phenomenon, observation, or research question that has not yet been proven
variation any change, difference, or deviation in condition, amount, level, form, or standard from a norm
species Groups organisms based on similar physical shapes, sizes, and structural traits
evolve to develop, change, or grow gradually over time, often moving from a simpler state to a more complex, advanced, or better-adapted form
population the total number of people, animals, or living organisms inhabiting a specific geographic area or region at a given time
predator an organism that naturally hunts, kills, and consumes other organisms (its prey) for food
prey an animal that is hunted, caught, and killed for food by another animal
environment the set of physical, chemical, biological, social, or cultural conditions and surroundings that affect the growth, health, development, and survival of a living organism or system
evolution a gradual process of change, development, or growth from one state to another over time
decomposers organisms that break down dead plants, animal carcasses, and organic waste into simpler inorganic substances like water, carbon dioxide, nitrogen, and phosphorus
extinction the state or process in which a group, species, language, or physical phenomenon no longer exists anywhere on Earth
climate the long-term pattern of atmospheric conditions—including temperature, precipitation, humidity, wind, and sunshine—typically averaged over a 30-year period
hiberrnate to spend the winter in a deep, sleep-like state of inactivity to survive cold weather and food shortages
biomes a large, naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat, defined primarily by regional climate conditions, such as temperature, precipitation, and soil type
fitness in natural selection an organism's ability to survive, find mates, and reproduce
Created by: user-2047721
 

 



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