Сагс хоосон байна
Marine pollution
Marine pollution refers to the introduction of harmful substances, such as waste and chemicals, into the ocean, which harms marine life and human health.
6 – 12-р анги
Бичсэн: Maradi Ádám Péter
Хянан шалгагч: Jóri Johanna
График дизайнер: Fasola Martin
Хөгжүүлэгч: Tóth Martin
Түлхүүр үгс
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