Cicada Behavior and Life Cycle

The video discusses periodical cicadas that emerge after 13 or 17 years underground. They rely on environmental cues, particularly soil temperature, to determine the right time to surface. Cicadas dig small holes to check if conditions are suitable for emergence, and if not, they return underground. The process is both fascinating and amusing.

How long do periodical cicadas typically stay underground before emerging?

• 20 or 25 years

• 13 or 17 years

• 10 or 12 years

• 5 or 7 years

What environmental factor do cicadas monitor to decide when to emerge?

• Soil temperature

• Air humidity

• Rainfall amount

• Daylight duration

What do cicadas do to check if the conditions are right for emergence?

• They fly around

• They sing loudly

• They change color

• They dig holes to the surface

What is the primary reason cicadas dig holes before emerging?

• To check environmental conditions

• To lay eggs

• To find food

• To escape predators

What is a humorous observation made by the narrator about cicadas?

• They mimic human speech

• They dance in circles

• They have amusing faces

• They sing funny songs