B is the answer because they are curious about how the bees find flowers. they want to know the answer, therefore curiosity would be my answer.
Populations evolve and individual organisms do not. Evolution occurs through natural selection and survival of the fittest as populations evolve traits that better suit their environment.
Well, scientists may have collected new information about their theory and had to revise said theory to keep it up to date. Does that help? :)
Answer::-
B. Water and nutrients absorbed by roots to the stem and leaves.
Xylem constitutes of the complex tissues and plays the role of conducting tissue for water and minerals from root to the stem and leaves (shoot).
