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Question, class and students in classroom at high school with learning, education or participation in lesson. Teen, group and people raising hands for knowledge, academic development and interaction
Side-view of cute lovely couple of handsome African American man and beautiful Caucasian woman participating in forestation. Young caring volunteers planting trees. Reforestation concept.
Elementary school student raises her hand, ready to answer the teacher's questions in class. Smart little curly girl is sitting at a desk next to her classmate in the classroom. Concept of education.
Female speaker giving presentation in lecture hall at university workshop. Rear view of unrecognized participants listening to lecture and making notes. Scientific conference event.

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