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levels organization
| Term | Definition |
|---|---|
| biomolecule | molecules made by living systems |
| carbohydrates | a biomolecule made entirely of carbon, hydrogen, and oxygen with a 2:1 ratio of hydrogen to oxygen |
| lipids | hydrophobic biomolecules containing carbon, hydrogen, and oxygen; make up the cell membrane |
| nervous tissue | reacts to stimuli and transmits signals throughout the body |
| muscular tissue | specialized to contract and allow for movement of the body and its parts |
| epitehlial tissue | lines the surface of the organs and body cavities |
| connective tissue | the most widespread tissue in the body; specialized to connect and support the other tissues |
| biome | a large naturally occurring community of flora and fauna occupying a major habitat |
| marine biome | areas of salty water; make up to 75% of Earth's surface. Algae and plankton dominate these ecosystems |
| freshwater biome | lakes, streams; areas of low salinity; dominant plant communities vary based on area |
| desert biome | low levels of rainfall and low population densities |
| forest biome | dominated by trees; climate has sufficient rainfall and soil |
| grassland biome | grass; no sufficient water |
| tundra biome | cold; arctic; tall mountains; sparsely populated |
| how are humans affecting the biosphere? | by polluting the air and depriving organisms of fresh air, using water resources, and endangering animal species through hunting, poaching, and deforestation |
| consumption | some individuals and societies have higher consumption rates of resources |
| technology effects | some technologies such as those that produce pollutants, can have a negative affect on the ecosystem |
| level of organization | atom, molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem , biosphere |