Ecology and the environment - The organism in the environment
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What does population mean
The number of individuals of a species living within a specific area
What does the term community mean
A community is two or more populations of organisms
What does the term habitat mean
the place where an organism lives
What does the term ecosystem mean
the interaction of two or more populations of organisms in their environment
practical: investigate the population size of an organism in two different areas using quadrats
https://igcse-biology-2017.blogspot.com/2017/06/42-practical-investigate-population.html
What does the term biodiversity mean
A measure of the variety of living organisms within a particular habitat, ecosystem, biome, or all over Earth
practical: investigate the distribution of organisms in their habitats and measure biodiversity using quadrats
https://igcse-biology-2017.blogspot.com/2017/06/44b-practical-investigate-distribution.html
How do biotic and abiotic factors affect the populations size and distribution of organisms
Biotic factors, such as interspecific competition, means that only the better-suited species will live in an area because they will out-compete other, less-adapted species. when the conditions are ideal then organisms can grow and reproduce successfully