[منينة منينة]

6-A serious threat to farmers in many parts of the world is erosion . If a large area of land is cleared of trees and bushes and is then badly treated by the farmer , the rain and winds may gradually wash away much of the fertile top soil
7-Big dams are built across rivers and their tributaries .In the rainy season , there is plenty of water , and the dams store it for use during the the dry months , at the same time , they provide the water dsed for generating electricity



8-In early historical times , and even through centuries in the history of Europe ,people believed that large fossil bones were the remains of giants.It is now believed the large fossil bones belong to some large extinct creatures such as dinosaurs.

9-Emergency equipment for carrying in the car must include a first-aid kit , a set of basic tools , are placement windscreen, towrope and red warning triangle . Some of them are compulsory. For small children,a special satfety seat is a "must