Climate Change

Climate change is ​ (a)   ​ (b)   ​ (c)   in the ​ (d)   ​ (e)   .

• a
• big
• problem
• world
• today

It ​ (a)   when ​ (b)   ​ (c)   ​ (d)   ​ (e)   .

• happens
• the
• Earth
• becomes
• warmer

​ (a)   ​ (b)   ​ (c)   ​ (d)   ​ (e)   .

• This
• is
• called
• global
• warming

One ​ (a)   for ​ (b)   ​ (c)   is ​ (d)   from ​ (e)   and factories.

• reason
• climate
• change
• pollution
• cars

Cutting ​ (a)   ​ (b)   also ​ (c)   the ​ (d)   ​ (e)   .

• down
• trees
• makes
• problem
• worse

Trees ​ (a)   ​ (b)   the ​ (c)   and keep the ​ (d)   ​ (e)   .

• help
• clean
• air
• planet
• cool

When we ​ (a)   ​ (b)   , oil, or gas, we ​ (c)   ​ (d)   ​ (e)   .

• burn
• coal
• release
• carbon
• dioxide

​ (a)   ​ (b)   is ​ (c)   ​ (d)   ​ (e)   .

• Carbon
• dioxide
• a
• greenhouse
• gas

​ (a)   ​ (b)   trap ​ (c)   in the ​ (d)   ​ (e)   .

• Greenhouse
• gases
• heat
• Earth’s
• atmosphere

​ (a)   of this, ​ (b)   ​ (c)   ​ (d)   ​ (e)   .

• Because
• the
• weather
• is
• changing