How are earthworms part of the soil ecosystem

Earthworms are sometimes known as ‘ecosystem engineers’ because they significantly modify the physical, chemical and biological properties of the soil profile. These modifications can influence the habitat and activities of other organisms within the soil ecosystem

It changes them from nouns to adjectives

Explanation:

The -etic ending turns nouns into adjectives and naturally changes their use in a sentence. Taking as an example the word energy, as a noun it is used as follows:

The child has a seemingly endless supply of energy.

The adjective energetic, on the other hand, is used in the following manner:

The child's energetic behavior was overwhelming for the babysitter.