PISA Reading Comprehension

Front

What causes acid rain?

Back

The release of sulfur dioxide and nitrogen oxides into the air

Front

How does acid rain affect buildings?

Back

It causes buildings to crumble due to chemical reactions.

Front

Why do many birds migrate?

Back

To find food and suitable breeding grounds

Front

How do birds navigate during migration?

Back

Using landmarks like mountains and rivers

Front

How was the Grand Canyon formed?

Back

By the Colorado River eroding rock layers over millions of years

Front

Why is the Grand Canyon considered a geologic wonder?

Back

Its rock layers show different colors and patterns

Front

What does sunscreen protect your skin from?

Back

Harmful ultraviolet rays from the sun

Front

How should sunscreen be applied for effectiveness?

Back

Reapply every two hours or after swimming

Front

What does SPF measure in sunscreen?

Back

The length of time it protects against UV rays

Front

Why is sunscreen important?

Back

It prevents skin damage and reduces the risk of skin cancer.