1. What does “adaptive” mean in the word adaptive radiation?

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

Ruby is conducting an investigation. an advantage of her design is that she can use a large range of variables, with that she can not be sure that one variable is the cause of another. what kind of investigation is ruby most likely conducting?

Which of the following are causes of evolutionary change? 1)genetic drift 2) natural selection 3) gene flow 4)mutation