Question

Overgrazing can turn a kelp forest into a ___________.

1.   urchin barren
2.   submarine canyon
3.   sand flat
4.   coral reef

All of the following marine organisms make their own food by photosynthesis, except one. Which one?

1.   algae
2.   zooplankton
3.   cyanobacteria
4.   plants
5.   sea grass

In which ecosystem do the physical conditions change most rapidly and most widely?

1.   coral reef
2.   intertidal zone
3.   deep sea
4.   open ocean
5.   kelp forest

Answer 1

1. Overgrazing can turn a kelp forest into a Urchin barren.

2. Zooplanktop is the marine animal which does not make its own food, it is a heterotroph , it relies on autotrophs for food.

3. In intertidal zones the physical conditions change most rapidly and most widely.

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