thick layer

thin layer

both are correct

raising

decreasing

improving

On the southern hemisphere

On the equator

On the northern hemisphere

In five years' tiem

In a century

In a decade

Iceberg

Avalanche

Glacier

the warmer the temperature gets.

the cooler the temperature gets.

the colder the temperature gets

Never

Depends on the season

Always

A hurricane.

An earthquake

A flooding.

both flooding and drought increase.

flooding increase but drought decrease.

drought decrease but flooding increase

growing

thickening

melting

ocean currents

ocean and wind currents

wind currents

ecological niches

ice shelves

diseases and species loss

Yes

No

Just in the past

population decrease

new technology

the environment

Because we are changing our minds.

Because we have a great impact on the environment.

Because our consumer economy is based on oil, gas and money.

To make countries use electric cars.

To make countries grow ecological products.

To make countries reduce our carbon footprint.

Just moral interest.

Both can be inferred from the video.

There is just environmental info in the documentary.

Political parties can solve global warming.

Political parties don't want to get involved in these issues.

People have the right to vote and change their leaders.

Renewable technology.

Less efficient electrical appliances.

Automobile industry.

If we recycle and plant trees.

If we change our thermostats to reduce energy for heating and cooling.

All of the above.