Final answer:
A fertile soil has a balanced soil texture, good porosity, and optimal acidity. Loam is a type of fertile soil that is highly suitable for plant growth.
Step-by-step explanation:
In order to describe a fertile soil, it is important to consider various factors such as soil texture, porosity, loam, and acidity. Fertile soil refers to a soil that has favorable conditions for plant growth. It typically has a balanced soil texture that includes a mixture of sand, silt, and clay, allowing for good water retention and drainage.
Porosity is also important in fertile soil, as it allows for the infiltration and storage of water and air within the soil. Loam is a type of fertile soil that has an ideal balance of sand, silt, and clay particles, making it highly fertile and suitable for most plants. Lastly, acidity, also known as soil pH, plays a role in determining soil fertility. Most plants prefer a slightly acidic to neutral pH range for optimal growth.