the changes in temperature over a period of 24 hours need to be shown in a graph & hours hr are a metric unit used for measuring time generally used for values between 025 and 72 -> the reaction in habitat over a frequency of space want to be shown in a dog the changes in temperature over a period of time need to be shown in a graph  the changes in temperature over a period of time need to be shown in a graph & a point immune is used for wool static / touches over space -> a line graph can be used to show the changes in temperature over a period of time