Which one of the following is a characteristic feature of a cropland ecosystem?
1. Least genetic diversity
2. The absence of weeds
3. Ecological succession
4. The absence of soil organisms
Subtopic:  Introduction |
 57%
Level 3: 35%-60%
NEET - 2016
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The term ecosystem was coined by:
1. A.G. Tansley 2. E. Haeckel
3. E. warming 4. E.P. Odum
Subtopic:  Introduction |
 82%
Level 1: 80%+
NEET - 2016
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