A. plastic
B. toxic waste
C. industrial fluid
D. all
Ecology
Ecology
A. famine
B. hunger
C. population growth
D. disease
A. 500 million
B. 3 million
C. 2 hundred billions
D. 1 billion
A. 30 years
B. 50 years
C. 60 years
D. 70 years
A. calcium carbonate
B. minerals
C. oxygen
D. water
A. shell
B. ballon shape
C. elastic layer
D. plasma membrane
A. carbonic acid
B. water
C. aminoacid
D. oxygen
A. 1%
B. 12%
C. 97%
D. 50%
A. endotherm
B. ectotherm
C. species
D. community
A. producer
B. consumer
C. species
D. plants
