This passage is mainly about ----

1. What do people worldwide do about 6 billion times every month?

2. According to the writer, we sometimes forget that photographs are ----

What is the main idea of the passage? Complete the sentence below.

The photos in the National Geographic archive ----

They show ordinary people doing ordinary things.

They are mostly black-and-white images.

They are the work of dedicated photographers.

1. The number of digital photos taken by Americans has decreased since 2006.

2. In 2011, Americans took approximately 80 million photos.

3. In 2006, Americans took an average of 177 photos per person.

4. In the U.S.A., over half of digital photos are taken using a smartphone.

5. People tend to be less worried about the cost of digital photography.

Looking at an old image / equipment lets us visit a world that has disappeared. Early explorers took heavy camera / equipment with them to record / look after people and places that other people had not seen. Now these photographs are recorded / preserved by archivists such as Bill Bonner.

Looking at an old image / equipment lets us visit a world that has disappeared. Early explorers took heavy camera / equipment with them to record / look after people and places that other people had not seen. Now these photographs are recorded / preserved by archivists such as Bill Bonner.

Looking at an old image / equipment lets us visit a world that has disappeared. Early explorers took heavy camera / equipment with them to record / look after people and places that other people had not seen. Now these photographs are recorded / preserved by archivists such as Bill Bonner.

Looking at an old image / equipment lets us visit a world that has disappeared. Early explorers took heavy camera / equipment with them to record / look after people and places that other people had not seen. Now these photographs are recorded / preserved by archivists such as Bill Bonner.

1. Photographs from the early 19th century are ----. Not many photos survive from that time.

2. A photo ---- a memory of a person, a place, or an event.

3. Photo archivists ---- old images. These images are often kept in environmentally controlled rooms so the photos aren't damaged.

4. The first ---- were large, heavy, and expensive.