Search Result For oxygen
The World’s Oxygen – level 2
09-09-2019 15:00
People are worried about the world’s oxygen because many...The history of Venice – level 3
29-05-2026 15:00
Venice was founded in the 6th century when people...Humans come from stars – level 3
05-03-2026 15:00
Everything around us, including our bodies, is made from...Amazon gold mining and children’s health – level 2
04-11-2025 15:00
In the Amazon rainforest, illegal gold mining is harming...Amazon gold mining and children’s health – level 3
04-11-2025 15:00
Illegal gold mining in the Amazon is causing a...Cleaning Mount Everest – level 2
10-07-2024 07:00
Since 1953, many climbers have left trash on Mount...Cleaning Mount Everest – level 3
10-07-2024 07:00
Mount Everest’s highest camp is covered in garbage that...