Which scenario is a competitive network?
scenario i: species 1 outcompetes species 2, which outcompetes species 3, which outcompetes species 4.
scenario ii: species 5 outcompetes species 6, which outcompetes species 7.
scenario iii: species 8 outcompetes species 9.
a. scenario ib. scenario iic. scenario iiid. none of the above

Scenario I, Scenario II, and Scenario III are examples of competitive networks.

Explanation:

There are different examples of nets as interactions between species. Trophic net is a very common example of these interactions. Another one is the competitive network.

The competitive network refers to the competition for the same resource between different species in a community or ecosystem. When a resource is useful for two or more species, they compete to gain it.

The competitive network can be represented as arrows that indicate which is the dominant species over the other. This representation must be done with a minimum of two species interacting and indicating through the direction of the arrow, which species wins the competition.

There is a competitive hierarchy when there are more than two species, for example, species A, B, and C. Species A dominates over the other two, and species B dominates over species C. In these cases, the representation would be A --> B --> C. This reflects a transitive competitive network. Species A displaces species B and C, and species B displaces species C. The only species that can persist is A. This example can be extended to any number of species, which suggests that a hierarchy network does not promote biologic diversity.