Answer:
Fungi reproduce asexually by fragmentation, budding, or producing spores. Fragments of hyphae can grow new colonies. Mycelial fragmentation occurs when a fungal mycelium separates into pieces with each component growing into a separate mycelium. Somatic cells in yeast form buds.
Two key characteristics of a good scientific investigation are hypothesis and observation of whatever organism your studying.
A. Abrasion
Reason - cause by scraps on rough surface which breaks skin on outer layer.
I think it the answer could be a "steamy mixture of carbon dioxide and water vapor".
