Why can non-native plantings on dunes be counterproductive in protecting beaches?
a. ?Non-native plants rarely survive in beach environments.
b. ?Non-native plants can require artificial watering, leading to a rise in the water table and gully formation.
c. ?Non-native plants can block the wind from moving the sand to and from the dunes.
d. ?Non-native plants can overtake the dunes, covering most of the sand, and require frequent cut-back.
e. ?Non-native plantings can change the soil acidity, making the sand more likely to blow away.
ANSWER: b
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