21. There are many basic differences between the flight of insects and of birds . 22. When all is said and done , man is a debtor to insects . 23. So it probably even feels good for the insect, 24. And when the insect gets there and lands on it, 25. Most insects are , however , orphans at birth . 26. Is there no gleam of intelligence in insect behaviour ? 27. How are insects named and classified ? 28. Mimics an insect, even to us. 29. They are typically forest insects , but do occur elsewhere also . 30. The snow fields and glaciers are regular feeding ground for these insects .
