Question

1.3 sustaining terrestrial ecosystems

which of the following is not a way to prevent soil erosion?

planting trees
no till farming
leaving part of the previous crop in the field

Explanation:

Analyze the question

The question asks to identify which of the listed options is NOT a way to prevent soil erosion.

Evaluate the options

• Planting trees: Tree roots bind soil particles together, and their canopy intercepts rainfall, reducing water and wind erosion. This is a highly effective prevention method.
• No till farming: Leaving the soil undisturbed minimizes disruption to soil structure and maintains organic cover, which significantly reduces erosion. This is a standard prevention method.
• Leaving part of the previous crop in the field: Crop residues left on the surface act as a physical barrier against wind and rain, protecting the topsoil. This is a standard prevention method.

Determine the correct choice

Since all three visible options ("Planting trees", "No till farming", and "Leaving part of the previous crop in the field") are well-established, effective methods for preventing soil erosion, the correct answer must be the option that is missing or cut off from the bottom of the screen, or we must conclude based on the visible choices that none of them are correct answers to the "NOT" question. However, in standard multiple-choice questions of this type, a fourth option like "Tilling the soil" or "Overgrazing" is typically the correct choice. Since only these three options are visible and all three do prevent erosion, none of the visible options is the correct answer to the "NOT" question.

Answer:

• (A) Planting trees
• (B) No till farming
• (C) Leaving part of the previous crop in the field