AUDIE CORNISH, HOST: The House has voted to repeal the Affordable Care Act. While the House has voted more than 50 times in the past four years to repeal the law, or parts of it, this was the first vote for a total repeal since 2013. NPR's Juana Summers joins us from the Capitol with the latest. Hey there, Juana.
1. Soil Type: Sandy. Sandy soil has the largest particles among the different soil types. Itâs dry and gritty to the touch, and because the particles have huge spaces between them, it canât hold on to water. Water drains rapidly, straight through to places where the roots, particularly those of seedlings, cannot reach.
Clay particles also pack together tightly, allowing for little air space. As a result, plant roots suffer from a lack of oxygen. Sand particles do not hold water or nutrients well. The best soil for plant growth is one in which all three types of particlesâclay, silt, and sandâare in balance. Such a soil is called loam. Soil horizons and profile Once soil has developed, it is composed of horizontal layers with differing physical or chemical characteristics and varying thickness and color.