`C_(4)` plants are twice as efficient as `C_(3)` plants in terms of fixing carbon (making sugar)

C4 plants are more efficient than C3 plants in terms of fixing carbon (making sugar).

The C_(4) plants are twice as efficient as C_(3) plants in terms of fixing CO_(2) but lose only ...... as much water C_(3) plants for the same amount of CO_(2) fixed.

The C_(4) plants are twice as efficient as C_(3) plants in terms of fixing CO_(2) but lose only ...... as much water C_(3) plants for the same amount of CO_(2) fixed.

The C_4 plants are twice as efficient as C_3 plants in terms of fixing CO_2 but lose only ... as much water C_3 plants for the same amount of CO_2 fixed.

The C_4 plants are twice as efficient as C_3 plants in terms of fixing CO_2 but lose only ………..as much water as C_3 plants for the same amount of CO_2 fixed.

The C_4 plants are twice as efficient as C_3 plants in terms of fixing CO_2 but lose only__________ as much water as C_3 plants for the same amount of CO_2 fixed.

C_(4) plants are more efficient than C_(3) plants because of ……….. .