Background: In grassland, much of the organic matter added to the soil is from the deep, fibrous, grass root systems. By contrast, tree leaves falling on the forest floor are the principal source of soil organic matter in the forest. Another difference is the frequent occurrence in the grasslands of fires that destroy large amounts of aboveground material but stimulate even greater contributions from roots. Also, the much greater acidity under any forests inhibits the action of certain soil organisms that otherwise would mix much of the surface litter into the mineral soil. As a result, the soils under grasslands generally develop a thicker A horizon with a deeper distribution of organic matter than in comparable soils under forests, which characteristically store most of their organic matter in the forest floor (O horizon) and thin A horizon.

Situation: Kim and Jane inherited some land. Kim inherited some grassland, while Jane inherited a forest. They both took good care of their properties.

Question: Which person inherited a parcel with more grass root systems in its soil?
Answer: Kim

Situation: Kim and Jane inherited some land. Kim inherited some grassland, while Jane inherited a forest. They both took good care of their properties.

Question: Which person inherited a parcel with fewer grass root systems in its soil?
Answer: Jane

Situation: Kim and Jane inherited some land. Kim inherited some grassland, while Jane inherited a forest. They both took good care of their properties.

Question: Which person inherited a parcel where leaves are the principal source of soil organic matter?
Answer: Jane

Situation: Kim and Jane inherited some land. Kim inherited some grassland, while Jane inherited a forest. They both took good care of their properties.

Question: Which person inherited a parcel where leaves are not the principal source of soil organic matter?
Answer: Kim

Situation: Kim and Jane inherited some land. Kim inherited some grassland, while Jane inherited a forest. They both took good care of their properties.

Question: Which person inherited a parcel where more fires occurred?
Answer: Kim

Situation: Kim and Jane inherited some land. Kim inherited some grassland, while Jane inherited a forest. They both took good care of their properties.

Question: Which person inherited a parcel where fewer fires occurred?
Answer: Jane

Situation: Kim and Jane inherited some land. Kim inherited some grassland, while Jane inherited a forest. They both took good care of their properties.

Question: Which person inherited a parcel where the soil had a higher acidity?
Answer: Jane

Situation: Kim and Jane inherited some land. Kim inherited some grassland, while Jane inherited a forest. They both took good care of their properties.

Question: Which person inherited a parcel where the soil had a lower acidity?
Answer: Kim

Situation: Kim and Jane inherited some land. Kim inherited some grassland, while Jane inherited a forest. They both took good care of their properties.

Question: Which person inherited a parcel with a thicker A horizon?
Answer: Kim

Situation: Kim and Jane inherited some land. Kim inherited some grassland, while Jane inherited a forest. They both took good care of their properties.

Question: Which person inherited a parcel with a thinner A horizon?
Answer: Jane

Situation: Two pedologists studied different types of soil. Yun studied forest soils, while Jian studied grassland soil. They were both very surprised with they findings.

Question: Which scientist read more about deep, fibrous, grass root systems?
Answer: Jian

Situation: Two pedologists studied different types of soil. Yun studied forest soils, while Jian studied grassland soil. They were both very surprised with they findings.

Question: Which scientist read less about deep, fibrous, grass root systems?
Answer: Yun

Situation: Two pedologists studied different types of soil. Yun studied forest soils, while Jian studied grassland soil. They were both very surprised with they findings.

Question: Which scientist read less about  tree leaves falling on the forest floor?
Answer: Jian

Situation: Two pedologists studied different types of soil. Yun studied forest soils, while Jian studied grassland soil. They were both very surprised with they findings.

Question: Which scientist read more about  tree leaves falling on the forest floor?
Answer: Yun

Situation: Two pedologists studied different types of soil. Yun studied forest soils, while Jian studied grassland soil. They were both very surprised with they findings.

Question: Which scientist read more about the principal source of soil organic matter in the forest?
Answer: Yun

Situation: Two pedologists studied different types of soil. Yun studied forest soils, while Jian studied grassland soil. They were both very surprised with they findings.

Question: Which scientist read less about the principal source of soil organic matter in the forest?
Answer: Jian

Situation: Two pedologists studied different types of soil. Yun studied forest soils, while Jian studied grassland soil. They were both very surprised with they findings.

Question: Which scientist read less about grassland fires?
Answer: Yun

Situation: Two pedologists studied different types of soil. Yun studied forest soils, while Jian studied grassland soil. They were both very surprised with they findings.

Question: Which scientist read more about grassland fires?
Answer: Jian

Situation: Two pedologists studied different types of soil. Yun studied forest soils, while Jian studied grassland soil. They were both very surprised with they findings.

Question: Which scientist read more about soils with greater acidity?
Answer: Yun

Situation: Two pedologists studied different types of soil. Yun studied forest soils, while Jian studied grassland soil. They were both very surprised with they findings.

Question: Which scientist read less about soils with greater acidity?
Answer: Jian