â¦ speed ratings of tires and what speed ratings mean. While you likely will never encounter speeds beyond that of your tires' capabilities, it's important to understand everything else a speed rating can tell you when making your purchase decision.
When seeding a lawn, you should never apply the fertilizer and seed together. This can cause an uneven distribution of the materials resulting in patchy areas or seedlings burned by excess fertilizer.
The type of fertilizer is the independent variable. The rate of growth is the dependent variable. So, to perform an experiment, you would fertilize plants with one fertilizer and measure the change in height of the plant over time, then switch fertilizers and measure the height of plants over the same span of time.