Question

question 3
in autumn, the leaves of deciduous trees change colours. this is because the chlorophyll is degraded, and
other pigments are still present in the leaves
water supply to the leaves has been reduced.
degraded chlorophyll becomes a different coloured pigment.
the cells of the leaves begin to die

Explanation:

Chlorophyll gives leaves their green - color. In autumn, as it degrades, other pigments like carotenoids and anthocyanins that were always present in the leaves become visible, causing the color change. Reduced water supply is not the main reason for color change. Degraded chlorophyll doesn't turn into a different - colored pigment. While leaf cells may start to die in autumn, it's not the direct cause of the color change.

Answer:

other pigments are still present in the leaves