Farming techniques: terracing and contour plowing
question: which of the following techniques do you think produce the most beautiful landscape?

Terracing as a `Best Management Practice' for ... - Purdue Extension.

Explanation:

BMPs are those conservation measures and/or land management techniques deemed most effective in preventing pollution by runoff or .

Sana maka tulong

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.