Probability and statistics matching !
an increase in the birth rate and a decrease in the death rate
an increase in the urban bird population and an increase in airplane accidents
a decrease in deaths related to heart disease and an increase in air travel
match with either correlation, causation, or no relationship

Step-by-step explanation:

*correlation: an increase in the birth rate and a decrease in the death rate

*no relationship: an increase in the urban bird population and in increase in airplane accidents

*causation: a decrease in deaths related to heart disease and an increase in air travel

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney