สมอง, ใบไม้, การพัฒนาอย่างยั่งยืน, อวัยวะ, ธรรมชาติ, สิ่งแวดล้อม, นิเวศวิทยา, พฤกษชาติ, แสดงผล 3d
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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