Right from the age of 8 years, she joined "Habonim Dror" and also a part of "Ni una menos". Her enviromental activism started during February of 2019. It was when she saw a video on Instagram of young people doing climate march in Europe. "Cause of the first International March for the Climate Crisis" was held on 15th of March, 2019. On the day, Becker, and other friends founded Jóvenes por el Clima. It is a part of on the end of February of 2019. After that, they arranged the march on Argentina. It was joined by 5,000 people. The organisation was pushing Argentinan authorities to do "Climate and Ecological Emergency Declaration". The government finally declared on the 17th of July, 2019. In 2019, she received a grant to attend the UN Climate Conference in Madrid on behalf of the Argentine youth. She represented as a part of "UnaSolaGeneración campaign" on by UNICEF and America Solidaria. She promoted climate change to youth around Latin America and the Caribbean during COVID-19 pandemic. 