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Living Environment
Term | Definition |
---|---|
organism | An individual living thing. |
bio-sphere | The part of earth that contains an ecosystem. |
community | All populations that live together in an area. |
molecule | A group of atoms. |
tissue | A group of cells. |
cell | The smallest function of life. |
population | A group of organisms of one type that live in the same area. |
ecosystem | Living and non-living |
nocturnal | night time |
transfer | The passing on of energy |
food chains | They show who is being eaten by another organism |
producer | An organism that makes it's own food from sunlight. |
habitat | Where an organism lives. |
predator | An organism that hunts another organism. |
consumer | An organism that needs to eat other organisms for energy. |
food web | It shows the feeding relationships (among many organism) in an ecosystem. |
prey | An organism that is eaten by another organism. |
trophic level | Steps in a food chain or food web |
set point | Normal state |
stimulus | Something that causes a reaction |
abiotic | Non-living |
biotic | Living |
responding variable | The variable (thing) that is observed |
controlled experiment | An experiment where only one thing changes |
hypothesis | An explanation that can be tested |
variables | Something that changes |
manipulated variable | The variable (thing) that "I" change. |
negative feedback loop | A stimulus (reaction) that causes an opposite output to maintain a stable level. |
control | The part of the experiment that remains the same. |
covalent bond | Sharing electrons |
ionic bond | Formed when electrons are transferred |
compound | Two or more elements |
element | atomic mass ---------------- neutron + protons |