Which of the following is the most obvious sign of cluster distribution in termites?
a. they are insects.
b. they are detritivores.
c. they are social insects.
d. many species of termites are considered pests.

c. They are social insects.

Explanation:

The termites are the social insects because of the fact that instead of attacking over the wooden material alone they colonize over the wooden substrate. Each individual termite insect shows a social behavior. The termite colony shows a division of labor and reproduction to increase the chances of survival. The termite queens exhibit the longest lifespan as compared to other type of insects of the world. Colonies of termites are self regulating in nature.  

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

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