Agronomy means:

(a) Broad beds and furrows

1. Effective in black soils

(b) Compartmental bunds

2. Convert area into small blocks

(d) Scoops

3. Formed between rows of crop

(d) Scoops

4. Small pits on soil surface

drought terms

Their explanation

(a) Permanent drought

1. Arid and semi-arid zones

(b) Seasonal drought

2. Inadequate water to meet evapotranspiration

3. Agriculture not possible

(d) Meteorological drought

4. Annual rainfall less than normal