How does the tiny acorn grow into a gigantic tree? Where does all that matter come from? scientific explanation please!

Based on the results of this study, what questions remain unanswered? how can these questions guide future research

Which of the following explains why a tree is often used as a model to represent the principle of common descent

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions