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.
There are various chemicals that are sprayed on non-organic crops  to control insects and weeds. One of the most common is glyphosate,  the active ingredient in Round-up, wh â¦ ich is used on Round-up Ready  crops.--------------------------------------------- Some chemical are good for plants â¦ and some are bad-you need to tell us which you want to know about. There are some chemical (weedkillers) that are specifically designed to kill plants.