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2. Grading (earthworks) - Wikipedia

   en.wikipedia.org/wiki/Grading_(earthworks)

   Section through railway track and foundation showing the sub-grade. Grading in civil engineering and landscape architectural construction is the work of ensuring a level base, or one with a specified slope, [1] for a construction work such as a foundation, the base course for a road or a railway, or landscape and garden improvements, or surface drainage.

3. Levelling refraction - Wikipedia

   en.wikipedia.org/wiki/Levelling_refraction

   The systematic effect of levelling refraction on sloping terrain. The Kukkamäki levelling refraction became notorious as the explanation of the "Palmdale Bulge", which geodesists observed in California in the 1970s. [1] [2] Levelling refraction can be eliminated by either of two techniques:

4. Terrace (earthworks) - Wikipedia

   en.wikipedia.org/wiki/Terrace_(earthworks)

   In agriculture, a terrace is a piece of sloped plane that has been cut into a series of successively receding flat surfaces or platforms, which resemble steps, for the purposes of more effective farming. This type of landscaping is therefore called terracing. Graduated terrace steps are commonly used to farm on hilly or mountainous terrain.

5. Grade (slope) - Wikipedia

   en.wikipedia.org/wiki/Grade_(slope)

   l = slope length α = angle of inclination. The grade (US) or gradient (UK) (also called stepth, slope, incline, mainfall, pitch or rise) of a physical feature, landform or constructed line is either the elevation angle of that surface to the horizontal or its tangent. It is a special case of the slope, where zero indicates horizontality. A ...

6. Glossary of levelling terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_levelling_terms

   Common levelling instruments include the spirit level, the dumpy level, the digital level, and the laser level. Levelling staff – specialized measuring stick or vertical staff used with the dumpy level, held by a second person while the operator of the level looks through it and takes readings off of the staff. Also call a rod.

7. Antibiotic use does not increase dementia risk, study suggests

   www.aol.com/antibiotic-does-not-increase...

   Antibiotic use is common in older people, with those over age 65 consuming 50% more antibiotics than younger adults. Using antibiotics is linked to disturbance of the gut microbiome, which may ...