21.   American troops are helping build the national army and diplomats encourage the growth of the central government.

22.   And existing health problems like asthma can be worsened by the flooding, the authorities say, because the water encourages the growth of irritants like mold and fungi.

23.   And that will be a gene that encourages fetal growth.

24.   As it flows, the phosphorus content encourages the growth of exotic plants, such as cat-tails and Brazilian pepper, which crowd out native vegetation.

25.   Both tamoxifen and raloxifene are synthetic drugs that block the action of the female hormone estrogen, which is known to encourage the growth of breast tumors.

26.   -- Cooler temperatures make the soil soft and workable yet still warm enough to encourage root growth.

27.   A central tenet of the plan is to encourage growth in cities.

28.   Add alfalfa meal and compost to help boost soil fertility, which will encourage better growth.

29.   Adding straw or phosphate fertilizers to the water will encourage the growth of microorganisms that will support fish.

30.   After root pruning, the stems need pruning to encourage fresh growth, avoid congestion, and keep the plants a manageable size.