Most animals that are in deep oceanic water are?

1. Primary consumers

2. Secondary consumers

3. Tertiary consumers

4. Detritivores

The vertical distribution of different species occupying different levels in a biotic community is known as:

Most animals are tree dwellers in a:

Which one of the following is not a functional unit of an ecosystem?

1. Energy flow

2. Decomposition

3. Productivity

4. Stratification