Why is variation important in meiosis? Why is variation important for the survival of species? Please be descriptive in your own words

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?

Which of the following is an advantage of solar energy?

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.