Each beehive consists of thousands of hexagonal thin-walled fragile cells. Name the material which is used to make these cells and mention the significance of the hexagonal shape of the cell.

What are biofertilizers? In what sense are they better than chemical fertilizers?

The production of food from animal sources has increased greatly in the last few decades. Justify it.

All animals are

Which is the most important source of food and fodder?