Time-series data represent data gathered for a particular characteristic over a period of time at regular intervals. Draw the outline of a time-series graph for each of the following variables.

a. Canada’s yearly CO₂ emissions for a period of 20 consecutive years

b. USD/CAD daily average exchange rate for a period of 30 consecutive days (Exchange rates are expressed as 1 unit of the foreign currency converted into Canadian dollars.)

c. Live births by month in Canada for a period of 12 consecutive months