How can people prevent fertilizer form polluting the water?

Apply half!

Explanation:

You can prevent runoff using less fertilizer! You can add it in certain ways to sustain what you needed the fertilizer for and help stop pollution as well! go in perpendicular stripes! either way it helps your plants better using little rather than a lot, they receive minerals from the ground soil anyway.

porter is writing economic history because he is focusing on the cost of developing vaccines.