Dr. Shellington is studying the ecosystem of the Aleutian Otters. What types of factors will he be examining? What if he wants to study the otters' community, what types of things will he study? Be detailed in your explanation.

Which of the following is not a characteristic of natural selection? 100 points pls more offspring are born than will survive to reproduce. mutations appear randomly breeding pairs are chosen by humans organisms that are better adapted are more likely to survive

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?

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?