OUR ENVIRONMENT CHANGES

1 - About 12.000 years ago people started ------

• going for shopping.
• settled in communities.

2 - 12.000 years ago People were able to --------------

• read novels .
• farm crops and raise domestic animals.

3- People built --------- to help water their crops.

• huge buildings.
• irrigation systems

4- -----------are part of the irrigation system.

• Canals.
• farms.

5 - In ancient times people build houses , roads ,and specific structures for their ..................

• religious events.
• researches about volcanic eruptions.

6 - The illustration below shows -----------

• a line of latitude.
• a canal in ancient mesopotamia.

7 - Rivers can burst their banks and cause ----------

• floods.
• earthquakes.

8 - winds blows ------------ into different shapes .

• sand dunes.
• rivers.

9 - People clear lands for ---------------

• crops and farming.
• playing chess.

10- Railways , office blocks ,and skyscrapers are -------------

• human -made features.
• natural features.