Which problem does the prolonged liberal irrigation of agricultural fields create?

Distinguish between shifting cultivation and slash-and-burn agriculture. Explain with ecological principles and concepts and pros and cons of these methods.

What is the function of Nitrogen (N), Phosphorus (P) and Potassium (K) in relation to tree growth and forest health overall?

Science has rarely documented long-term, soil-based productivity decline in forested ecosystems due to forest harvesting as normally practiced. Where it has been documented, some common themes have emerged. Identify what types of soil conditions might first succumb to forest harvesting.  What management techniques might tend to harm productivity, especially in the long-term? Be sure to explain your answers.

What are the variables for sustainability for Farming?

What are some of the potential “third-party" effects in the large-scale transferring of water rights from agricultural use to in-stream use?

Where does the economically optimal level of harvest in a fishery occur?

Why there are different kinds of agriculture system in the world ?

What is a primary producer?

Why is nitrogen used in fertilizer when there's so much N2 in the air