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1. Studying Life Section 1-3 pg. 16-23

3. Characteristics of Living Things Living things are made up of units called cells. Living things reproduce. Living things are based on a universal genetic code. Living things grow and develop. Living things obtain and use materials and energy. Living things respond to their environment. Living things maintain a stable internal environment. In general, living things change over time.

27. Branches of Biology

30. Levels of Organization Biosphere Ecosystem Community Population The part of Earth that contains all ecosystems Community and its nonliving surroundings Populations that live together in a defined area Group of organisms of one type that live in the same area Biosphere Hawk, snake, bison, prairie dog, grass, stream, rocks, air Hawk, snake, bison, prairie dog, grass Bison herd Largest, most inclusive smallestleast inclusive

31. Levels of Organization Organism Groups of Cells Cells Molecules Individual living thing Tissues, organs, and organ systems Smallest functional unit of life Groups of atoms; smallest unit of most chemical compounds Bison Nervous tissue Nervous system Brain Nerve cell Water DNA Largest, most inclusive Smallest least inclusive

32. End

33. End for the day

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