One of the plant introduced from new world to the old world is_________________?

A. Thai range area
B. Raygistan range area
C. Cholistan range area
D. None of the above

A. Biotin
B. Carbohydrates
C. Folate
D. Vitamin

A. Succession
B. Retrogression
C. Biodiversity
D. Linear planting

A. Diffusion
B. Percolation
C. Absorption
D. All the above

A. SO2
B. SO3
C. SO4
D. None