Xylem is the answer......
Endocytosis. That is the process of the intake of food by creating a vesicle.
The correct answer would be option B. A third phosphate group. Since ADP means Adenosine "diphosphate"--having two phosphate groups, so in order to create three phosphate groups, which would then result in Adenosine "Triphosphate" (Tri= three) , a third phosphate group should be added.
Answer;
C.Identify each bird species by using a dichotomous key.
Explanation;
-A dichotomous key is a tool that is used to determine the identity of items in an ecosystem or a particular habitat, such as trees, birds, wildflowers, mammals, reptiles, rocks, and fish. To study the interactions of different birds , identifying each birds species using a dichotomous key would be an important and appropriate step.