1) Which of the following is a proper food  chain ? a) plant>grasshopper>frog>snake>eagle b) eagle>snake>frog 2) Who is Ahmad ? a) Proferser b) Docter 3) Plants releases _________________. a) CO2 b) O2 4) Plants absorb ____________from air. a) H2O b) CO2 c) O2 d) N

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