bay beach coast ecosystem environment habitat organism sand shore Soil bare brown earth furrows patterns plough ploughed texture tracks 2013 pot background many mixed nature plants potted several crop farm field harvest land shrubs trees cracked cracked soil cracking dried drought drying out lake bed cloud clouds Dirt HDR naked Nyberg sky tree igneous metamorphic science Sed forest green ground reptile summer terrapin tortoise turtle turtles water fresh garden gardening leaf leafy lettuce spring vegetable vegetables