สีเขียว, แข็งแรง, รอยพระบาท, รอยเท้าทางนิเวศน์, อากาศเปลี่ยนแปลง, ปลูก, การเกษตร, สิ่งแวดล้อม, ที่ยั่งยืน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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