Question

During industrial revolution, the black soot on the tree bark hid the ______.

विकल्प

• light-coloured moths

• dark-coloured moths

• yellow-coloured moths

• black- and white-coloured moths

Answer 1

During industrial revolution, the black soot on the tree bark hid the dark-coloured moths. 

Explanation:

Black soot made dark-coloured moths blend in with the tree bark, so birds were less likely to spot them. Light-coloured moths became easier for birds to see.