(1) Millions of people in the Himalayas and Andes suffer from goitre and cretinism as glaciation, heavy rainfall and melting snow regularly leach mountain soils of their iodine content.

(2) Pesticides that leach into rivers

(3) Pesticides and fertilizers that leach into rivers

(4) #6 Polystyrene can leach styrene, a possible human carcinogen that may also interfere with hormones.

(5) The pad is used to store a mound of ore through which chemicals percolate to leach out the gold ore, which is then collected and processed into bullion.

(6) The other attraction of these materials, which were developed in the 1970s, is that they continuously leach fluoride and so can help reduce the incidence of recurrent caries.

(7) The small chloride ion can also sometimes work its way past protective coatings and leach out soluble iron chloride salts, exposing new surfaces for attack.

(8) One drawback of organic-based products is the tendency of chemicals to leach from the matrix material, leaving parts of the surface unprotected.

(9) The key, once you've cleared a patch of ground, is to get something sown or planted to fill the vacuum: otherwise the winter wet will leach nutrients from the soil, and the weeds will undo your good work in a matter of weeks.

(10) Both field evidence and binocular microscope inspection of the sediment from East Avenue Range indicate that the sediment is highly leached .

(11) Brackish and ocean waters may contain large quantities of sodium chloride as well as many other soluble compounds leached from the crust of the earth.

(12) Soluble minerals are leached from soils on upper slopes, move down the slope, and are often deposited at the foot of the slope.

(13) In Australia, Mangareva, parts of the U.S. Southwest, and many other locations, most of the nutrients had already been leached out of the soil by rainfall.

(14) When they looked at the data from their 1995-2001 study and saw how much nitrate was being leached from the soil, they realized just how important it is to manage drainage systems carefully.

(15) He concluded that the pseudomorphs were derived when rainwater penetrating the near-surface layers leached out the sodium carbonate from the original shortite, leaving behind calcium carbonate.

(16) The sort of feed may have to change, because the wetter winters will probably result in nutrients being leached out of the soil at a faster rate.

(17) This, combined with nutrients being leached out of the soils by high rainfall, may cause weakness in some plants and nutrient deficiency, particularly in sandy soils.

(18) Humus being highly colloidal, has the ability to adsorb and retain for future plant use many of the ions such as calcium, magnesium, potassium, phosphates and ammonia which might be leached from the soil and lost in drainage.

(19) It will stop rain leaching nutrients from the soil over the winter, and as it rots down it will improve the soil's texture and fertility quite naturally.

(20) If rainfall or irrigation is excessive, nitrate will be leached below the plant?