Beads with different colors homogeneous or heterogeneous

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

Which group of islands is called the land of fire and is located at the southern tip of south america

Which of the following was featured in the middle-class lifestyle of the gilded age? a new emphasis on acquiring goods a return to classical ideals renewed interest in controlling journalists a reflection of rural values