Excavators identified six soil layers, the uppermost being the plowzone and the others labeled Strata I-V, with Stratum V being the deepest.
32.
After dropping to the ground, the larva eventually constructs a flattened, oval, densely woven, cream to brown cocoon in the upper soil layer.
33.
In the cedar flats of Wilson County, small farmers were struggling with depletion of the already-thin soil layer caused by poor farming tactics.
34.
Whereas, when soil is tilled by machinery, the soil layers invert, air mixes in, and soil microbial activity dramatically increases over baseline levels.
35.
Various manufacturers'brochures claim that crops perform well during hot and dry seasons because roots penetrate soil layers deeper to reach moisture and nutrients.
36.
The forest is located in a flat section of the Central Basin characterized by thin soil layers where the limestone bedrock is often exposed.
37.
Similarly, photochemical transformations require sunlight, available only in the topmost meter ( s ) of lakes or rivers, plant surfaces or submillimeter soil layers.
38.
The plants and soil layers in the swale act as a natural filter to sieve out impurities so that clean water flows into the waterway.
39.
Their tillage also mixes the different soil layers, restarting the soil formation process as less weathered material is mixed with the more developed upper layers.
40.
The goal was to visually examine the soil layers, to determine soil bearing capacity and depth of groundwater, as well as the depth of bedrock.
