How does the article convey the importance of Henrietta Lacks' cells? (A) by quoting excerpts from a book about the life and impact of Henrietta Lacks

(B) by describing events from the childhood of Henrietta Lacks' daughter

(C) by detailing the scientific process of collecting and growing HeLa cells

(D) by giving examples of the scientific advances made using Hela cells

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?

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

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above