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Terms in this set (20)
natural selection
Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest
Charles Darwin
-Naturalist; wrote On the Origin of Species; suggested species evolve or adapt over time due to "natural selection" (the weaker die out)
population
A group of individuals that belong to the same species and live in the same area
species
A group of similar organisms that can breed and produce fertile offspring.
variation
Any difference between individuals of the same species; may improve the survival chances of certain individuals
mutation
any event that changes genetic structure; source of variation; can be beneficial or harmful to organism
selective breeding
the practice by which humans breed specific plants or animals for desired traits; also referred to as artificial selection
adaptation
an inherited trait that improves survival and reproductive success of an organism, can be structural (physical feature of body), behavioral, or physiological (a physical or chemical event that occurs automatically within the body of an organism)
evolution
A change in a species over time
prosper
to succeed
habitat
the natural home or environment of an animal, plant, or other organism.
hibernation
A period of inactivity that some animals experience in winter that allows them to survive on stored body fat
Estivation
Mostly happens during summer. Enables animals to survive long periods of high temperatures and scarce water supplies.
migration
organisms traveling long distances in search of new habitats
physiological
Having to do with an organisms physical processes such as breathing, food, water, sleep, homeostasis, excretion
4 things that influence change of species:
1. Overproduction or overpopulation
2. Competition
3. the Environment/limited resources
4. Genetics/Variations within a species.
Overproduction
organisms produce more offspring than can survive
competition
the struggle between organisms to survive in a habitat with limited resources
Extinction
A term that typically describes a species that no longer has any known living individuals.
survival of the fittest
adaptations that make you more fit means you will survive longer than the less fit and reproduce. The weak die out
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- natural selection
- species
- selective breeding
- adaptation
- competition