نماذج امتحانات ساينس Science -الصف الخامس - الترم الثاني

............It is an area of land where water from different sources flows towards a common location

Downstream  is place where a river ends

When there is more rainfall, the level of water in rivers or streams will .............

...........They are small water bodies such as small creeks or streams that flow into bigger rivers.

Human activities cause imbalance of water that leads to...........

Freshwater systems focuses on the balance of water in watershed 

when there is water imbalance, rivers or streams will have a constant source of fresh water.

There is  balance of water in a watershed

Upstream  is place where a river ..........

A ........help scientists understand how the water bodies in an area interact with one another.