What is their secret? For one thing, tiny hairs on each side of their abdomen register the slightest air movement caused by enemies and reveal the direction from which it comes. Also, their nervous system appears to be extremely efficient, as the roaches need only one hundredth of a second to react and run away.
परंतु, सर्व औद्योगिक गाळसाळ आणि केरकचऱ्‍याचा भरणा नदीच्या पात्रात झाल्यामुळे तिचा प्रवाह मंदावला, सोबतच नदीची खोलीही कमी झाली. ”