Fill in each blank with the correct word from the lesson.

1. Below that is the nutrient-rich _______ where plants grow their roots.
2. _______ soil is a mix of sand, clay, and humus — ideal for most crops.
3. Soil is not just dirt — it is a complex layered system called a soil _______.
4. Once topsoil is lost through _______, it takes millennia to regenerate.
5. The topmost layer contains decomposed _______ic matter called humus, teeming with life.

Choose the best option for each question.

1. Which soil layer is most important for plant growth?
   a) Bedrockb) Parent rockc) Topsoild) Subsoil
2. What type of soil is best for farming?
   a) Sandyb) Clayeyc) Loamyd) Rocky
3. How long does it take to form 1 cm of topsoil?
   a) 10 yearsb) 100 yearsc) About 1000 yearsd) 1 million years

Write T for True or F for False in the brackets.

1. Below that is the nutrient-rich topsoil where plants grow their roots.
2. Below that is the nutrient-rich Bedrock where plants grow their roots.
3. Loamy soil is a mix of sand, clay, and humus — ideal for most crops.
4. Sandy soil is a mix of sand, clay, and humus — ideal for most crops.

1. In your own words, explain what Soil Profile means.
2. List two things you learned from this lesson on Soil Profile.