; (B) the agricultural sector should expand adoption of soil health practices (including diverse crop rotations, cover cropping, conservation tillage, perennialization of highly erodible land, agroforestry, composting, biologically based nutrient management, and advanced grazing management including silvopasture) sufficiently to restore at least a quarter of the soil carbon that has been lost in the last 300 years by not later than 2030 and at least half of lost soil carbon by not later than 2040; and (C) cover crop acres in the United States should increase to at least 25 percent of crop acres by not later than 2030 and at least 50 percent by not later than 2040, with at least 50 percent of cropland acres covered by crops, cover crops, or residue year-round by not later than 2030 rising to at least 75 percent by not later than 2040. (3) Farmland preservation To help achieve the goal specified in subsection (a), the rate of conversion in the United States of agricultural land to development, as well as the rate of grassland conversion to cropping, should be reduced by at least 80 percent by not later than 2030 and eliminated by not later than 2040. (4) Pasture-based livestock To help achieve the goal specified in subsection (a), the livestock sector in the United States should— (A) establish advanced grazing management, including management-intensive rotational grazing, on at least 50 percent of all grazing lands by not later than 2030 and 100 percent of all grazing land by not later than 2040; (B) reduce greenhouse gas emissions related to feeding of ruminants by at least a third by not later than 2030 and by at least 50 percent by not later than 2040 by reducing non-grazing feeding of ruminants, growing feed grains and forages with soil health and nutrient management practices that minimize net greenhouse gas emissions from cropland, and designing livestock feed mixtures and supplements to mitigate enteric methane emissions