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1. What ecosystems are under the influence of salinity, light and depth?
A
Terrestrial ecosystems
B
Aquatic ecosystems
C
Both
2. Lakes, ponds, rivers and steams are in common...
A
Both
B
Standing water
C
Low level of salinity
3. What kind of ecosystem is formed when a river meets a sea?
A
An estuary
B
An affluent or tributary
C
A pond
4. Where do clownfish live?
A
Abyssal depth
B
Coral reef
C
Estuary
5. There isn't much food here, so species can't feed often, describes...
A
The abyssal depth
B
The coral reef
C
The estuary
6. What do fish in abyssal depth feed on?
A
They eat fish
B
They eat the food that falls from above
C
They eat plants
7. Fresh water mixes with salty sea water, describes...
A
The abyssal depth
B
The coral reef
C
The estuary
8. What picture describes mutualism?
A
B
C
9. A group of interconnected food chains is a...
A
food web
B
food chain
C
biome
10. Primary consumers produce their own food
A
True
B
False
C
Both
11. Oak trees can't live in scrubland
A
True
B
False
C
Depends on the whether
12. The ecosystem with the fewest vegetation is...
A
Oceanic forest
B
Taiga
C
Scrubland
13. Aquatic fungi are...
A
Decomposers
B
Comsumers
C
Producers
14. Phytoplankton and algae make their own food by carrying out photosynthesis.
A
True
B
False
C
15. How deep is the water in the deepest zone?
A
Between 200 and 1000 metres deep.
B
From 1000 metres to the botton.
C
From the land to 200 metres deep.
16. How does the disappearance of one species affect every thing in the ecosystem?
A
The disappearance of one species doesn't affect anything
B
The extintion of one species produce changes in the environment.
C
The extintion of one specie produce changes in this specie
17. When we cut down trees, it affects the amount of rainfall.
A
True
B
False
C