Which style of music, sometimes called the “first popular music,” usually has simple lyrics about everyday life with simple instrumental accompaniment? a. rap b. folk c. processional d. rock (i know this isn't the right subject, there is no music.)

25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

Explain how scientists use geologic time to determine the age of landforms.