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Unit 2-1
Human Impacts on Ecosystems
| Question | Answer |
|---|---|
| biodiversity | The variety of living things on Earth or in a particular area |
| biosphere | All living and non-living parts of all ecosystems on Earth |
| calcium carbonate | on social media. The compound coral skeletons are made from |
| carbon dioxide | and pollution. A greenhouse gas produced by many human activities |
| climate change | biodiversity. A change in Earth’s long-term weather patterns |
| coral | skeletons. A tiny marine animal also known as a polyp |
| coral bleaching | The process in which corals turn white |
| coral gardening | weather events. The growing of new corals from healthy coral fragments |
| coral reef | An underwater ecosystem based around corals |
| extinct | When all members of a species have completely died out |
| fossil | The remains or traces of an ancient organism preserved in rock |
| fossil record | corals, fish, and turtles. The history of life on Earth told through fossils |
| geological time scale | A representation of Earth’s history based on the rock record |
| mass extinction | The loss of 75% of species on Earth in 2 million years |
| mitigation strategy | of species over time. An action taken to reduce a threat |
| ocean acidification | The ocean becoming more acidic by absorbing carbon dioxide |
| relative dating | A method to arrange rock strata in order of age |
| Rock Strata | Stacked-up layers of sedimentary rocks |
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bmsscience