1.   That, in turn, has spurred algae growth, which clouds the lake.

2.   PHOSPHATE FREE Phosphates, which can be found in sewage, industrial wastes and some fertilisers, have contributed to problems with excessive algae growth in lakes.

3.   Because sea grass absorbs nutrients, its loss further stimulates algae growth.

4.   But a pond or large container garden needs a more balanced ecosystem to minimize algae growth.

5.   But nutrients like phosphorus from such plants encourage algae growth and cloudiness, reducing water quality, said Goldstein.

6.   But once mixed upward into bright waters where aquatic plants can thrive, the nutrients acted as fertilizers, promoting explosive algae growth.

7.   For most water gardeners, a bigger concern is algae growth.

8.   If your old tank was galvanized metal or stainless steel, the water probably cooled enough at night to prevent algae growth.

9.   In the eastern bay, chlorophyll levels, a measure of algae growth, also appear to have declined.

10.   On the other hand, planting thickly helps reduce algae growth by blocking sunlight and providing competition for nutrients.

n. + growth >>共 543
earnings 12.66%
profit 12.04%
job 9.34%
population 8.38%
revenue 4.50%
export 3.58%
year 3.36%
productivity 2.30%
wage 2.20%
employment 1.93%
alga 0.27%
alga + n. >>共 31
bloom 39.33%
growth 21.35%
species 5.62%
plant 2.25%
problem 2.25%
bed 1.12%
break 1.12%
buildup 1.12%
chemical 1.12%
combination 1.12%
每页显示:    共 19