R4-1 Disappearing Ice Cap

Old-fashioned power stations pump CO2 into the Earth's atmosphere.

• ground
• air
• ocean
• forests

Everyone in the team contributed to the victory.

• played a part in
• took credit for
• worked against
• hoped for

The tsunami in 2004 caused destruction all around the Indian Ocean.

• panic
• death
• damage
• financial loss

Christopher Columbus tried to sail through the Northwest Passage.

• NO INFORMATION
• True
• FALSE

The first successful sea journey was over one hundred years ago.

• NO INFORMATION
• True
• FALSE

Commercial ships started using the Northwest Passage in the twentieth century.

• NO INFORMATION
• True
• FALSE

The Northwest Passage was ice-free in 2007.

• NO INFORMATION
• True
• FALSE

A cruise ship has sailed through the Northwest Passage.

• NO INFORMATION
• True
• FALSE

Seals and walruses are endangered species.

• NO INFORMATION
• True
• FALSE

Polar bears live on the ice all year.

• NO INFORMATION
• True
• FALSE