<span>Mucous membranes provide a mechanical barrier at body openings. They also line the respiratory, GI, urinary, and reproductive tracts. Mucous membranes secrete mucus, a slimy substance that traps pathogens. The membranes also have hair-like cilia.</span>
There isn't exactly an opposite of weathering, although I would say that it is sedimentation/ deposition, since it builds up rock and dirt and such, rather than breaking it down.
The smallest energy unit is joule (J) followed by British thermal unit (Btu), Calorie (kcal) and Kilowatt0hour (kWh). 1 joule is equivalent to 1 newton meter; 1 BTU is equivalent to 1055 joules; 1 calorie is equivalent to 0.0003969 BTU and 1 kWh is equivalent to 3,413 BTU.
Junior College
Junior college is a 2-year institution. This is where you go to get a 2- year associate degree.
I think the answer is Sperm.