What is the top of the saturated zone called

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?

Adistinctive characteristic of mammals that is not observed in other vertebrates is

Packet fragmentation is not normal, and can only occur if an attack has been initiated. true false