Water Hyacinth, Eichhornia crassipes, root system cleaning the river

The video begins with the soothing sounds of birds chirping, setting a natural and calming tone.

What is the primary focus of the introduction section?

• The diet of birds

• The habitat of birds

• The migration patterns of birds

• The sound of birds chirping

Why are bird sounds significant in nature?

• They are used for navigation

• They are a form of entertainment

• They indicate the time of day

• They help in identifying bird species

Which of the following is a type of bird call?

• Roaring

• Chirping

• Barking

• Hissing

What can bird calls indicate about their environment?

• All of the above

• Weather conditions

• Food availability

• Predator presence

How do birds use their calls to communicate?

• To attract mates

• To establish territory

• To warn of danger

• All of the above