Question

primary succession is the type of succession that occurs on bare rock with no soil. what organism can help turn rock into soil? deer lichen

Explanation:

Lichen is a composite organism formed from a symbiotic relationship between a fungus and an alga or cyanobacterium. In primary succession on bare rock, lichen plays a crucial role. The fungal part of the lichen can secrete acids that break down the rock surface. Over time, as the rock is weathered and eroded by the actions of lichen (along with physical processes like wind and water), small particles of rock are released. The alga or cyanobacterium in the lichen can photosynthesize (if it's an alga) or fix nitrogen (if it's a cyanobacterium), and as the lichen dies and decomposes, along with the broken - down rock particles, it starts to form a thin layer of soil. Deer are large mammals that graze on plants and do not have a direct role in converting rock into soil.

Answer:

Lichen