로그인
WAEC - Biology (2009 - No. 38)
Food chains are relatively short because
of energy recycling in the ecosystem
energy gain at each trophic level is high.
of energy loss at each trophic level
energy flow in an ecosystem is uni-directional.
댓글 (0)
댓글을 달려면 로그인하세요
광고
자바스크립트가 이 페이지를 올바르게 로드하도록 허용
