The series of changes that occur after a disturbance in an existing ecosystem is called
a. primary succession
b. secondary succession
c. disturbance succession
d. pioneer succession

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?

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?