View of a Waterfall with Large Boulders Surrounded by Green Foliage
Winter Landscape Featuring Snow-Covered Trees and White Mountain Peaks
High-Angle View of a Crater Lake Shoreline in Oregon
Scenic View of a Blue Mountain Lake with Trees and Patches of Snow
Waterfall Icicles on a Rock Formation in a Pacific Northwest Forest
Overhead View of a Winter Waterfall with Snow-Covered Boulders Around
Close-Up View of Icicles Hanging from an Evergreen
Winter Landscape with Snow-Covered Mountain Peaks and Evergreens
Full-Frame View of a Mountain Full of Snow-Covered Trees
Winter Scenery with Evergreens Covered with Snow in a Valley
Winter Landscape with a Cloudy Sky and Snowy Trees
Morning Frost on a Patch of Grass with Mountains in the Clouds in the Background
Low-Angle View of a Grass on a Mountain Meadow
Ground-Level View of a Tidal Pool with an Evening Sky
Solar Panel with a Bird Against Blue Sky
Close-Up of Solar Panels
View of a Reed with Morning Dew
View of a Reed with Morning Dew
Backlit View of an Evergreen with a Morning Mist in the Background
View of a Creek Running Through Lush Forest
View of a Creek Running Through Lush Forest
Footpath Amidst Trees in a Forest
Creek Flowing Amidst Trees in a Forest
Creek Flowing Amidst Trees in a Forest
Creek Running Through Alpine Meadow and a Mountain in Background
Full Frame Shot of Solar Panel
Trees and Lava Field at Lassen Volcanic National Park in California
Hydrothermal Springs Surrounded by a Forest
Full Frame Shot of a Lake with Colorful Bottom
Sunrise in the Desert with High Mountains in the Background
Sunrise in the Desert with High Mountains in the Background
Cross Section of Tree Trunk with Annual Rings
Close-Up of a Prickly Pear Cactus Blooming
Detailed View of a Green Foliage
Directly from Above Close up View of a Cactus
Panoramic View of a Desert with Cacti Before Sunset
Full Frame View of a Three-Leafed Clover
Purple Flowers Growing in a Desert During Super Bloom
Purple and White Flowers Growing in a Desert During Super Bloom
Corroded Aluminum Can in Sand with Flowers Growing Around
Close-Up of a Creek Running Through a Sparse Forest Terrain
Volunteer Picking up an Empty Plastic Bottle
Volunteers Signing up for a Clean up
A Cleanup Volunteer Picking up a Plastic Bottle
Volunteer Picking up a Plastic Bottle by a Road
A Cleanup Volunteer Using a Claw to Pick up Litter
A Cleanup Volunteer Using a Claw to Pick up Litter by a Road
A Cleanup Volunteer Walking on a Side of a Road
A Cleanup Volunteer with a Claw and a Plastic Bag
A Cleanup Volunteer Collecting Litter by a Road
A Cleanup Volunteer Looking for Litter by a Road
A Cleanup Volunteer Looking for Trash by a Road
A Cleanup Volunteers Looking for Litter by a Road
A Cleanup Volunteer Riding a Bike and Looking for Litter
People Standing in Front of an Aquarium Tank with a Turtle Swimming in It
Aquarium Tank with a School of Fish and a Kelp Forest
Tropical Coral Reef Fish in an Aquarium Tank
Array of Sea Anemones on a Sandy Bottom
Woman Filling a Bottle with Water from a Mountain Creek
Woman Filling a Bottle with Pure Water from a Mountain Creek
   1/2