Answer:
(a)
The roots of the hedge remove water and mineral salts from the soil. This makes
it more difficult for the crops to grow. The hedge also throws shade over the
nearby crops, making them photosynthesis less as the light intensity is less,
which means they have less energy for
growth. ()
(b) Further away from the hedge, the crops have enough nutrients from the
soil and sunlight for photosynthesis. The hedge also provides protection from
the winds, making it warmer than the exposed areas in the middle of the field.
Warmer temperatures mean more photosynthesis and faster growth.
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