Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Grade 4 B-1 Sci. Def
Chapter 1 Ecosystems
| Term | Definition |
|---|---|
| system | A group of parts that work together as a unit |
| stability | The condition that exists when the changes in a system over time cancel each other out |
| ecosystem | Groups of living things and the environment they live in |
| population | A group of the same species living in the same place at the same time |
| community | All the populations that live in the same area |
| habitat | An environment that meets the needs of an organism |
| niche | The role or part played by an organism in its habitat |
| producer | A living thing, such as a plant, that makes its own food |
| consumer | A living thing that eats other living things for energy |
| decomposer | A living thing that feeds on the wastes of plants and animals or on their remains after they die |
| energy pyramid | A diagram that shows how much food energy is passed from one organism to another along a food chain |
| food web | A diagram that shows how food chains connect and overlap |
| climate | The average temperature and rainfall of an area over many years |
| diversity | Variety |
| salinity | The amount of salt in water |
| intertidal zone | A narrow strip, along the shore, that is covered with water during high tide and exposed during low tide |
| near-shore zone | Ocean zone that starts at the low-tide mark and goes out into the ocean |
| open-ocean zones | The deep parts of the oceans, located far from shore |
Created by:
scscolts
Popular Science sets