Contour farming is the method of growing crops on sides of hills, mountains and steep slopes by planting on graduated terraces built into the slope. This method effectively reduce soil erosion and water loss and maximizes arable land area. In most of the systems the contours are low, flat ridge of earth built across the slope, with a channel for runoff water just above the ridge. In areas where soils are able to take in water and rainfall amount is relatively low, level terraces may be used to reduce soil erosion too.
<h2>Answer:</h2><h2><em><u>The hippopotamus and the oxpecker bird are in a mutualistic and parasitic relationship. This is because the oxpecker bird gets food and protection from the hippopotamus. However, the bird gets food by making little cuts in the hippopotamus to obtain insects. This isn't entirely harmful to the hippopotamus though.</u></em></h2><h2><em><u>Hope</u></em><em><u> this</u></em><em><u> helps</u></em><em><u> you</u></em><em><u> ❤️</u></em></h2><h2><em><u>Mark</u></em><em><u> me</u></em><em><u> as</u></em><em><u> brainliest</u></em><em><u> ❤️</u></em></h2>
