- Messages
- 233
- Reaction score
- 90
- Points
- 38
als alum allaykom
http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w10_qp_11.pdf in question 39 , WHY THERE'S A PERCENTAGE OF ENERGY TRANSER OF 80? and 20? isn't always 10% between the trophic levels? and 1% between sun and producer?
http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w10_qp_11.pdf in question 39 , WHY THERE'S A PERCENTAGE OF ENERGY TRANSER OF 80? and 20? isn't always 10% between the trophic levels? and 1% between sun and producer?