Sunflowers have specialized cells that enable them to track the Sun. Which of the following allows the sunflower to move to face
the Sun?
A.
Gravity
B.
Electricity
C.
Friction
D.
Turgor

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming