Answer: While physical weathering breaks down a rock's physical structure, chemical weathering alters a rock's chemical composition. Physical weathering works with mechanical forces, such as friction and impact, while chemical weathering takes place at the molecular level with the exchange of ions and cations.
Explanation:
I'd go with the third one because the products of both of them are oxygen and carbon dioxide.
Answer: bryophytes
Mosses belongs to the division of Bryophytes. These are small plants that are flowerless. They typically grows in mats. They often grow in damp and shady locations. The plants exhibit simple leaves that are only one cell thick, that are attached to a stem that may be branched or unbranched and performs very little role in conduction of water and minerals.
This process is known as adaptation.