Question

drag and drop the words or phrases that accurately complete the paragraphs. there are three basic types of scientific investigations. a scientist may choose to perform a/an investigation to identify patterns in nature by comparing two or more items or groups. this type of investigation is limited, however, because it is hard to identify direct relationships between groups. also, too many uncontrolled variables outside the investigation may affect results. a scientist may perform a/an investigation to make detailed records of animals or species without interfering with the environment. descriptive investigations may be limited by the scientists impressions and the inability to be repeated and replicated by other scientists. a scientist may perform a/an investigation to determine a relationship between two variables. these investigations may be repeated and replicated by other scientists. this experimental descriptive comparative

Explanation:

• For the first blank: The description mentions comparing two or more items or groups, which is characteristic of a comparative investigation.
• For the second blank: The description about making detailed records without interfering with the environment fits a descriptive investigation.
• For the third blank: The description of determining a relationship between two variables is typical of an experimental investigation.

Answer:

1. comparative
2. descriptive
3. experimental