What is the significant charactistics of rhode island

In which research method does a researcher change the value of one variable to determine how the change affects another variable? a. experiment b. observational research c. survey d. case study

When would the government be allowed to limit what people say? a. the government may prevent individuals from engaging in "hate speech" b. the government may prevent individuals from engaging in "symbolic speech" c. the government may prevent entertainers from using foul language d. none of these are examples of permissible limitations on the freedom of speech

Explain how tectonic plate movement creates geological events and features.