Question 3 of 10
Which activity is an example of a comparative investigation?
OA. Collecting and analyzing data about water quality in two different
wetland areas
OB. Testing the effects of pesticides on the growth rates of fish native
to a wetland
OC. Observing and recording the nesting habits of a species of bird
living in a wetland
OD. Calculating the size of a bird population living in a wetland
BUBMER