Nature and the environment

     Choose the correct word.

The population of the world is ....................... smaller. 

 Choose the correct word.

 There ....................... many endangered animal and plant species.

 Choose the correct word.

Our climate is changing. The world is becoming ..................................... . The Arctic ice is melting. 

 Match the words with their definitions. 

 to pollute           

 Match the words with their definitions. 

environment  

 Match the words with their definitions. 

to reduce

Match the words with their definitions. 

poison

Match the words with their definitions. 

 to cause    

Match the words with their definitions. 

 waste  

Fill in the gaps with the right tenses of the verbs in brackets. 

     If we ... (to have) enough water, we ... (to be) thirsty. 

Fill in the gaps with the right tenses of the verbs in brackets. 

  More species ... (to survive) if we ... (to protect) nature. 

Fill in the gaps with the right tenses of the verbs in brackets. 

   We ... (to reduce) the use of natural resources if we ...   (to recycle) old and used things. 

Fill in the gaps with the right tenses of the verbs in brackets. 

 Clean water... (not; to be) a problem if  people ... (to stop) throwing rubbish into the seas and rivers. 

Fill in the gaps with the right tenses of the verbs in brackets. 

Many animals and plants ...    (not; to be) in danger if we .. (not, to stop) killing the animals and (not; to cut down) the trees. 

Put a name to each of these sciences.

... is the study of things that occur naturally such as heat,light, sound, electricity, magnetism, etc.

Put a name to each of these sciences.

b ... is the science of living things.

Put a name to each of these sciences.

... is the scientific study of plants.