Mujer escribiendo en libro de texto mientras voluntarios limpian el parque - Foto e imagen de stock

Back view of young men and women listening explaining about loving the environment and reducing global warming at the Volunteer Camp

Female volunteer pointing at her t-shirt outdoors

Volunteer inviting people to join their non-profit organization and asking woman to write her contact information in form

Young Asian Volunteers with garbage bags cleaning park area. Ecology, Charitable organization concept.

Close-up of male volunteer holding clipboard with contract and giving a pen to his friend to sign it