post grid – Level 1

A security camera in a Mexican city films something unusual. Birds fall from the sky. The birds look like a black cloud. They fly to the ground. Most birds fly away. Some animals stay on the ground. They die.

People have different opinions about the event. Some people say that dirty air is the problem. Others say that electricity kills the animals.

People have different opinions about the event. Some people say that dirty air is the problem. Others say that electricity kills the animals.

People have different opinions about the event. Some people say that dirty air is the problem. Others say that electricity kills the animals.