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    Rural teacher reading book to pupils in outdoor learning — Stock Photo
    Rural teacher reading book to pupils in outdoor learning
    Close-up of volunteer holding garbage bag in a forest. — Stock Photo
    Close-up of volunteer holding garbage bag in a forest.
    Rural female teacher pointing with finger for chinese students standing outdoor — Stock Photo
    Rural female teacher pointing with finger for chinese students standing outdoor
    From above crop anonymous child volunteer in protective gloves collecting trash in summer nature — Stock Photo
    From above crop anonymous child volunteer in protective gloves collecting trash in summer nature
    Smiling female volunteer painting mural on sunny wall — Stock Photo
    Smiling female volunteer painting mural on sunny wall
    Group of volunteer families collecting garbage in a natural park — Stock Photo
    Group of volunteer families collecting garbage in a natural park
    Portrait smiling girl volunteer cleaning up litter on sunny boardwalk — Stock Photo
    Portrait smiling girl volunteer cleaning up litter on sunny boardwalk
    Positive hipster woman in casual clothes and gloves collecting trash into bag while squatting on deserted beach — Stock Photo
    Positive hipster woman in casual clothes and gloves collecting trash into bag while squatting on deserted beach
    From above of relaxed young female in protective mask with smartphone sitting in medical chair during blood donation in modern hospital — Stock Photo
    From above of relaxed young female in protective mask with smartphone sitting in medical chair during blood donation in modern hospital
    Environmentalist volunteers picking up trash in field — Stock Photo
    Environmentalist volunteers picking up trash in field
    Portrait of African American male conservation volunteer cleaning up river in the countryside, his friends picking up rubbish in the background. Ecology and social responsibility in rural environment. — Stock Photo
    Portrait of African American male conservation volunteer cleaning up river in the countryside, his friends picking up rubbish in the background. Ecology and social responsibility in rural environment.
    Volunteer man wearing a medical mask holding a garbage bag in a forest — Stock Photo
    Volunteer man wearing a medical mask holding a garbage bag in a forest
    Outdoor activities for chinese rural female teacher and students — Stock Photo
    Outdoor activities for chinese rural female teacher and students
    Rural chinese teacher and pupils in school and on yard — Stock Photo
    Rural chinese teacher and pupils in school and on yard
    Portrait of a mature woman — Stock Photo
    Portrait of a mature woman
    Volunteers with clipboard talking at construction site — Stock Photo
    Volunteers with clipboard talking at construction site
    Children collecting garbage, learning environmental conservation — Stock Photo
    Children collecting garbage, learning environmental conservation
    Rural chinese teacher and pupils in school and on yard — Stock Photo
    Rural chinese teacher and pupils in school and on yard
    Children collecting plastic bottles with a garbage bag in a forest, — Stock Photo
    Children collecting plastic bottles with a garbage bag in a forest,
    Young female teacher and chinese school students playing in rural area — Stock Photo
    Young female teacher and chinese school students playing in rural area
    Daughter and mother collected plastic bottles by the lake together — Stock Photo
    Daughter and mother collected plastic bottles by the lake together
    Positive hipster woman in casual clothes and gloves collecting trash into bag while squatting on deserted beach — Stock Photo
    Positive hipster woman in casual clothes and gloves collecting trash into bag while squatting on deserted beach
    Volunteer woman picking up a garbage medical mask from a river. — Stock Photo
    Volunteer woman picking up a garbage medical mask from a river.
    Back view of crop unrecognizable multiracial teen friends in blue uniform participating in environmental volunteer campaign in summer day — Stock Photo
    Back view of crop unrecognizable multiracial teen friends in blue uniform participating in environmental volunteer campaign in summer day
    Side view mid section of a female volunteer at an animal shelter petting a dog in a cage during a sunny day. — Stock Photo
    Side view mid section of a female volunteer at an animal shelter petting a dog in a cage during a sunny day.
    Low section of volunteer cleaning beach on a sunny day — Stock Photo
    Low section of volunteer cleaning beach on a sunny day
    Concerned female in swimsuit collecting trash in natural lake — Stock Photo
    Concerned female in swimsuit collecting trash in natural lake
    Volunteer woman depositing a garbage bag in a garbage — Stock Photo
    Volunteer woman depositing a garbage bag in a garbage
    Front view mid section of a female volunteer wearing blue uniform at an animal shelter holding a rescued puppy in her arms. — Stock Photo
    Front view mid section of a female volunteer wearing blue uniform at an animal shelter holding a rescued puppy in her arms.
    Front view of African American male volunteer standing with bucket and clipboard while the other volunteers are talking behind him on the beach — Stock Photo
    Front view of African American male volunteer standing with bucket and clipboard while the other volunteers are talking behind him on the beach
    Positive hipster woman in casual clothes and gloves collecting trash into bag while squatting on deserted beach — Stock Photo
    Positive hipster woman in casual clothes and gloves collecting trash into bag while squatting on deserted beach
    Portrait of of happy female and male conservation volunteers cleaning up the countryside with board Volunteer, their friends in the background. Ecology and social responsibility in rural environment. — Stock Photo
    Portrait of of happy female and male conservation volunteers cleaning up the countryside with board Volunteer, their friends in the background. Ecology and social responsibility in rural environment.
    Rural teacher and pupils in outdoor learning — Stock Photo
    Rural teacher and pupils in outdoor learning
    Portrait of happy Caucasian female conservation volunteer cleaning up the countryside, picking up rubbish her friends around her. Ecology and social responsibility in rural environment. — Stock Photo
    Portrait of happy Caucasian female conservation volunteer cleaning up the countryside, picking up rubbish her friends around her. Ecology and social responsibility in rural environment.
    Boy volunteer picking up litter on sunny beach — Stock Photo
    Boy volunteer picking up litter on sunny beach
    Crop anonymous female volunteer giving blood for save life in modern blood transfusion center — Stock Photo
    Crop anonymous female volunteer giving blood for save life in modern blood transfusion center
    Cropped unrecognizable volunteer with plastic bags picking rubbish from terrain against trees in summer woods in daylight — Stock Photo
    Cropped unrecognizable volunteer with plastic bags picking rubbish from terrain against trees in summer woods in daylight
    Portrait of happy Caucasian female conservation volunteer cleaning up forest in the countryside, holding rubbish bag, smiling to camera. Ecology and social responsibility in rural environment. — Stock Photo
    Portrait of happy Caucasian female conservation volunteer cleaning up forest in the countryside, holding rubbish bag, smiling to camera. Ecology and social responsibility in rural environment.
    Rural female teacher smiling and looking at pupils in classroom — Stock Photo
    Rural female teacher smiling and looking at pupils in classroom
    Young female rural teacher reading book to pupils in outdoor learning — Stock Photo
    Young female rural teacher reading book to pupils in outdoor learning
    Outdoor activities for chinese rural female teacher and students — Stock Photo
    Outdoor activities for chinese rural female teacher and students
    Positive hipster woman and man in casual clothes and gloves collecting trash into bag while squatting on deserted beach — Stock Photo
    Positive hipster woman and man in casual clothes and gloves collecting trash into bag while squatting on deserted beach
    Rural teacher and pupils in outdoor learning — Stock Photo
    Rural teacher and pupils in outdoor learning
    Senior woman and girl volunteer cleaning up litter on sunny, sandy beach — Stock Photo
    Senior woman and girl volunteer cleaning up litter on sunny, sandy beach
    Rural teacher and pupils smiling at camera in outdoor learning — Stock Photo
    Rural teacher and pupils smiling at camera in outdoor learning
    Positive hipster woman in casual clothes and gloves collecting trash into bag while squatting on deserted beach — Stock Photo
    Positive hipster woman in casual clothes and gloves collecting trash into bag while squatting on deserted beach
    Portrait of African American male conservation volunteer cleaning up forest in the countryside, smiling to camera holding rubbish bag. Ecology and social responsibility in rural environment. — Stock Photo
    Portrait of African American male conservation volunteer cleaning up forest in the countryside, smiling to camera holding rubbish bag. Ecology and social responsibility in rural environment.
    Group of social active children with man volunteer collecting garbage into trash bag during environmental campaign in summer nature — Stock Photo
    Group of social active children with man volunteer collecting garbage into trash bag during environmental campaign in summer nature
    Group of volunteers wearing medical mask collecting garbage — Stock Photo
    Group of volunteers wearing medical mask collecting garbage
    Front view mid section of a female volunteer wearing a blue uniform at an animal shelter petting three rescued dogs. — Stock Photo
    Front view mid section of a female volunteer wearing a blue uniform at an animal shelter petting three rescued dogs.
    Ethnic volunteers with plastic bags picking rubbish from terrain against trees in summer woods in daylight — Stock Photo
    Ethnic volunteers with plastic bags picking rubbish from terrain against trees in summer woods in daylight
    Daughter and mother collected plastic bottles by the lake together — Stock Photo
    Daughter and mother collected plastic bottles by the lake together
    Close-up of volunteer couple holding garbage bags in a forest. — Stock Photo
    Close-up of volunteer couple holding garbage bags in a forest.
    Rural female teacher and students during after school activities — Stock Photo
    Rural female teacher and students during after school activities
    Serious woman in swimwear in water contaminated with plastic bottles at red lagoon — Stock Photo
    Serious woman in swimwear in water contaminated with plastic bottles at red lagoon
    Female donor with patch on hand sitting in medical chair after blood transfusion procedure — Stock Photo
    Female donor with patch on hand sitting in medical chair after blood transfusion procedure
    Man in protective mask with handmade wooden nesting box communicating with group of children volunteers gathering together in summer park — Stock Photo
    Man in protective mask with handmade wooden nesting box communicating with group of children volunteers gathering together in summer park
    Volunteer couple holding garbage bags in a forest. Ecology concept — Stock Photo
    Volunteer couple holding garbage bags in a forest. Ecology concept
    Front view mid section of a female volunteer wearing blue uniform at an animal shelter holding a rescued puppy in her arms. — Stock Photo
    Front view mid section of a female volunteer wearing blue uniform at an animal shelter holding a rescued puppy in her arms.
    Happy rural teacher and pupils in outdoor learning — Stock Photo
    Happy rural teacher and pupils in outdoor learning