C. find the wind speed and direction
Phloem and Xylem are tissues is some plants this is also veins for us. (Part of the Circulatory system). Hope this helps :)
Answer:Natural selection is the process through which populations of living organisms adapt and change
Explanation: Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others
The answer is C: a pollutant.