Here's why:

* It's igneous: Granite is a type of igneous rock, meaning it formed from the cooling and solidification of molten magma.

* It weathers and erodes: Over time, granite, like all rocks, is broken down by weathering (rain, wind, ice) and erosion (moving water, glaciers).

* It forms soil: The breakdown products of granite – sand, silt, clay, and minerals – become the foundation for soil. This soil can then support a wide variety of plants and ecosystems.

Other examples of parent rocks include:

* Basalt: Another igneous rock, often found in volcanic areas.

* Limestone: A sedimentary rock formed from the accumulation of marine organisms' shells.

* Sandstone: A sedimentary rock formed from cemented sand grains.

* Shale: A sedimentary rock formed from compacted mud and clay.

The specific type of parent rock determines the characteristics of the resulting soil, including its texture, mineral content, and pH.