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Science 2.4
Pre-Ap
| Ecosystem | This term refers to all the interacting communities within a given area plus the abiotic factors affecting it |
| What are abiotic factors? | non-living things |
| What are biotic factors? | living organisms |
| What are autotrophs (producers)? | self feeder or eater |
| What do producers do? | These organisms take the sunlight and inorganic matter and convert it into organic energy storing molecules (food/ sugars) |
| What is the start of all food chains? | producers |
| What are heterotrophs (consumers)? | mostly eater but can be prey for other animals so, can also be eater |
| What are the different levels of consumers? | primary, secondary, tertiary, etc. |
| How do consumers get energy and store matter? | eat other organisms |
| What are Decomposers or detritovores? | feed on dead, organic matter-detrius |
| What do decomposers do? | take detrius and convert it back to the inorganic state for recycling and use by producers |
| What are Biogeochemical cycles? | This refers to the constant cycling of matter on Earth |
| What scientific law is this supported by? | Law of Conservation of Matter |
| What does the Law of Conservation of Matter state? | The law states “matter is neither created or destroyed; just transfered and transformed.” |
| Why does water evaporate? | Water evaporates because of sunlight from bodies of water and is carried in clouds by wind to almost while world. The water vapor condenses to rain of snow (precipitation) and returns to the surface of the Earth |
| What do plant take in water for? | Photosynthesis |
| How does the carbon cycle work? | Carbon dioxide is removed from the air by photosynthesis (performed by plants, phytoplankton, and bacteria) |
| How does carbon dioxide return to the atmosphere? | by the burning of organic material |
| Through what does nitrogen move through? | Nitrogen moves between plants, animals, bacteria, the atmosphere, and soil |
| About how much nitrogen is in the atmosphere? | approximately 78% |
| About how much nitrogen is in the human body weight? | approximately 3% |
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