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.
A selective herbicide kills only certain target plants (as specified on product label) and leaves behind all other plants virtually unscathed (dosage and timing of application dependent). Most selective herbicides used on turf (in particular) are systemic in nature (chemical transported throughout plant).