what is a ddt , it is a insectide which can kill animals, when was the ddt invented, 1940, does the ddt break down in a food chain, no it does not, what does the ddt do , it kills animals and insects, what is a bioccumulation, it accumilates which means it can kill animals , what is a biomagnification, it concentrates on a certain substance.

science

만든이
인쇄
퍼가기

순위표

비주얼 스타일

옵션

템플릿 전환하기

)
자동 저장된 게임을 복구할까요?