Answer:
By interacting with the soil, living organisms such as plants, animals, and microorganisms have played a crucial role in changing and shaping the soil in North America over millions of years. The physical actions of organisms, such as plant roots breaking up hard layers and animal burrows aerating the soil, have contributed to changes in the soil's physical properties. Microorganisms, in particular, have had a significant impact on the soil's chemical composition through the process of decomposition. As dead plant material decomposes, nutrients are released into the soil, making it more fertile and able to support life. Overall, the interactions between organisms and soil have led to the development of a complex ecosystem in North America, where plants and animals rely on the soil for survival.
Step-by-step explanation: