Lawn and farming fertilizer is harmful to the enviroment due to the abundance of chemicals. When it rain or seeped underground, the fertilizer leaked into the nearby lake and thus, all the fish died to the chemicals in the fertilizer.
Answer: Noting the color of the solution as it is heated.
Explanation: All other choices are examples of quantitative data. As in the measuring of a quantity(mass, volume, temperature). The last choice is an observation that cannot be easily converted into a numeric form.
Velocity is in relation to direction it is the speed plus direction it's going, and speed is distance over time
it should be the second one
