A moss begins to grow on a rock in an area that was previously uninhabited by life. This is an example of what?

Answer: Primary succession

Explanation: The primary succession takes place at the places where the fungi, lichen and pioneer species grow on the substrate other than soil.

The moss and other plants starts growing when there is a suitable condition for their growth.

The place like rock and volcanic ashes are not fertile as soil for the growth of plants so when there is a growth of moss on the rock for the first time known as Primary Succession.

Its primary species I just took the test and got it right.