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Invasive species zebra mussels warning sign at Pine River boat landing in north central Minnesota.
Jewish holiday of Sukkot. Traditional symbols (The four species): Etrog (citron), lulav (palm branch), hadas (myrtle), arava (willow)
Earth Day or World Wildlife Day concept. Save our planet, protect green nature and endangered species, biological diversity theme. Group of wild animals and flock of butterflies with globe in hand.
Jewish holiday of Sukkot. Traditional symbols (The four species): Etrog (citron), lulav (palm branch), hadas (myrtle), arava (willow)

Free stock photosspecies (8)

Seedpod and seeds of milkweed (genus: Asclepias; unidentified species) early in autumn, field in northern Illinois. Milkweed seeds are dispersed by wind. Image used under license from Freestock.com<a href="https://www.freestock.com/free-photos/seedpod-seeds-milkweed-genus-asclepias-unidentified-290659382">Image used under license from Freestock.com</a>
Buffalo crossing road ahead and in rear-view mirror bring tourist traffic to a standstill along road in Custer State Park, South Dakota, USA, on a summer eveningImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/buffalo-crossing-road-ahead-rearview-mirror-167162552">Image used under license from Freestock.com</a>
Crookneck squash (botanical name: Cucurbita pepo; species: Yellow crookneck) at a farmer's marketImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/crookneck-squash-botanical-name-cucurbita-pepo-158355716">Image used under license from Freestock.com</a>
Green creeper (Genus: Dichondra; species: unidentified; cultivar: Silver Falls), often considered a lawn weed, with yellow plastic markers, growing in greenhouse for transplantation on golf courseImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/green-creeper-genus-dichondra-species-unidentified-101944813">Image used under license from Freestock.com</a>
Bizarre trunk of tropical tree (botanical name: Ficus altissima) in the mulberry family, native to southeast Asia, with aerial roots, in Sarasota, FloridaImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/bizarre-trunk-tropical-tree-botanical-name-122406280">Image used under license from Freestock.com</a>
Beach naupaka (botanical name: Scaevola taccada or Scaevola sericea), a shrub indigenous to hot dry coastal areas of Hawaii (also known as aupaka, huahekili, naupaka kahakai, and naupaka kai)Image used under license from Freestock.com<a href="https://www.freestock.com/free-photos/beach-naupaka-botanical-name-scaevola-taccada-46272568">Image used under license from Freestock.com</a>
Tulip field on a tulip farmImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/tulip-field-tulip-farm-695557">Image used under license from Freestock.com</a>
Polar bear (scientific name: Ursus maritimus) feeding underwaterImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/polar-bear-scientific-name-ursus-maritimus-83978284">Image used under license from Freestock.com</a>

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