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Interactions of Life

Unit 1 Science Study Stack

Any variation that makes an organism better suited to its environment. (Changes in a body to fit a location.) adaptation
The part of the Earth that supports life. (Includes the top part of the Earth's crust, water, and the atmosphere.) biosphere
Consists of all the organisms living in an area, as well as the nonliving parts of that environment. ecosystem
The study of interactions that occur among organisms and their environments. ecology
Made up of all organisms of the same species that live in an area at the same time. population
All the populations of all species living in an ecosystem. community
The place in which an organism lives. habitat
Hypothesis that states organisms with traits best suited to their environment are more likely to survive and reproduce. (Survival of the fittest.) natural selection
Anything that restricts the number of individuals in a population. (Such as food, space, etc.) limiting factor
The largest number of individuals of one species that an ecosystem can support over time. ("The brimming bucket") carrying capacity
The initial stage where a population hasn't started to grow at a fast rate. lag phase
The highest rate of reproduction under ideal conditions. biotic potential
The larger a population gets, the faster it grows. exponential growth
Interactions among members of the same species. social behavior
Organisms that use an outside energy source like the Sun to make energy-rich molecules. They make their own food. (Green plants) producers
Organisms that cannot make their own energy-rich molecules. consumers
The act of converting the Sun's energy into food. Used by green plants through chlorophyll. photosynthesis
Any close relationship between species. symbiosis
A symbiotic relationship in which both species benefit. mutualism
A symbiotic relationship in which one organism benefits and the other is not affected. commensalism
A symbiotic relationship in which one organism benefits and the other is harmed. parasitism
An organism's role in its environment - how it obtains food and shelter, finds a mate, cares for its young, and avoids danger. niche
Created by: mr_grega