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Understanding Living Things & Their Environment

Explore the relationship between organisms and their habitats, the different levels of biological complexity, and how living things interact with their surroundings in this comprehensive guide on ecology.

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Understanding Living Things & Their Environment

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  1. (CHAPTER 1 / SECTION 1) LIVING THINGS AND THE ENVIRONMENT

  2. Living Things and Their Environment • An organism or type of living thing needs to obtain food, water, shelter and other things it needs to live, grow, and reproduce from its environment. • An environment that provides the things an organism needs to live is called its habitat.

  3. Factors in an Environment Biotic– living parts of the environment. Ex. producers and consumers. Abiotic – nonliving parts of the environment. Ex. water, sunlight, oxygen, temperature, and soil.

  4. Biosphere Biome Ecosystem Community Population Individual Biological Complexity • Living organisms can be studied at different levels of complexity.

  5. Populations • A species is a group of organisms that are similar and can reproduce with each other. • A population is a group of organisms from the same species occupying in the same geographical area. • This area may be difficult to define. Why? Migrating wildebeest population Tiger populations comprise widely separated individuals

  6. Communities and Ecosystems • A community is all the populations that live together in an area. • An ecosystem is the community of organisms that live in a particular area along with their nonliving surroundings. * The community and the abiotic factors together form an ecosystem.

  7. Ecology • The study of how living things interact with each other and their environment.

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