Quiz
1. Based on the article, a scientist studying El Ninos in the United States would MOST likely agree with
which statement?
a. More research is needed to determine whether El Ninos will increase in response to global
warming
b. The El Nino of 2015 is responsible for increased global warming in the United States.
C. The upcoming La Nina will reverse the negative effects caused by the last El Nino.
d. The countries most affected by the El Nino of 2015 will likely experience even more disastrous
El Ninos in the future.

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.