Pregnancy Weight Gain: Facts. 1  For women who were a normal weight before pregnancy with a BMI of 18.5-24.9 the recommended weight gain guideline is 25-35 pounds. 2  Women who are underweight pre-pregnancy with a BMI of less than 18.5 should gain between 28-40 pounds unless your health care provider says differently.
Tilth generally refers to the physical condition of the soil as it relates to plant growth. Favorable tilth implies good conditions for seed germination and root proliferation, allowing crops to thrive.
Detrital sediments include any solid particles derived from weathering that are greater than silt-sized. False Detrital sedimentary rocks are only formed from sediments produced by mechanical weathering. False Clay particles are important to soil development because they allow water and gases to enter soil.