(A) In $Australian$ $\text{ } Acacia$, the leaves are small and short-lived. The petioles of these plants expand, become green, and synthesize food to

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(A) In $Australian$ $\text{ } Acacia$, the leaves are small and short-lived. The petioles of these plants expand, become green, and synthesize food to compensate for the reduction in leaf surface area. This modification is an adaptation to survive in arid conditions.