b. about 85% of the bodyâs phosphorus is located in bones and teeth. c. the phosphoric acid in cola drinks has little effect on bone content. d. the ratio of phosphorus to calcium in the diet is important for bone maintenance.
Grass that grows in undesirable locations, such as between the cracks of a sidewalk, can be killed with chemicals called non-selective herbicides. Every herbicide, even ones with the same active ingredient, can have different strengths. Therefore, purchase herbicides in a ready-to-use container for easy use.
Other Ways to Kill Weeds. 1  1. Use salt as a weed killer. Try this method only if you want to eradicate weeds in an area where you do not plan to grow anything for several years -- perhaps around paving stones and in pavement cracks. 2  2. Kill the weeds with boiling water.