state gov APPSC (ఆంధ్రప్రదేశ్) Group 2 (Pre + Mains) Mock Test 2023 General Science Biology Ecology & Environment
In 1972, ________ coined the term ‘pyramid of numbers' that represented the total numbers of individuals (population) present in each trophic level.
1
Eugene Odum
2
Ernst Haeckel
3
Arthur Tansley
4
Charles Elton