Ask your health care provider how much weight you should gain. A woman who was average weight before getting pregnant should gain 25 to 35 pounds after becoming pregnant. Underweight women should gain 28 to 40 pounds. And overweight women may need to gain only 15 to 25 pounds during pregnancy.
Each series consists of soils having major horizons that are similar in color, texture, structure, reaction, consistence, mineral and chemical composition, and arrangement in the soil profile. A soil profile is the sequence of natural layers, or horizons, in a soil. It extends from the surface downward to unconsolidated material. Most soils have three major horizons, called the surface horizon, the subsoil, and the substratum.
The texture of soil is determined by the ratio of sand, clay, and silt in soil. Soil with higher sand is sandy loam and feels more grainy because sand grains are larger than than the other rocks grains. Silty loam is produced by a higher percentage of silt in the soil. It is a finer grained soil because silt tends to be smaller than sand. On the soil triangle, these three components are able to make up a wide variety of soil textures. Soil is named for its texture, thus the texture of a soil is very important. Too much or too little of any of these components can make the soil not usable for agriculture.