Ecology

A. community
B. trophic level
C. series
D. succession

A. primary consumer
B. secondary consumer
C. producer
D. primary producer

A. 1%
B. 2%
C. 3%
D. 4%

A. primary consumer
B. secondary consumer
C. tertiory consumer
D. primary producer

A. 10%
B. 20%
C. 30%
D. 40%

A. 1900kcal
B. 1620kcal
C. 1700kcal
D. 1800kcal

A. 10%
B. 20%
C. 30%
D. 40%

A. 1.5 million kcl
B. 5 million kcl
C. 6 million kcl
D. 7 million kcl

A. common
B. away
C. sign
D. wither

A. 1 year
B. thousands of year
C. 4 year
D. 7 years