What has happened to the Amazon jungle

A．Highways have been constructed through the jungle to help ease the traffic in the cities.

B．Jaguars, parrots and deer that once inhabited the jungle have left because me place was getting too hot for them.

C．The land has been cleared for growing soybeans because it is the most popular Brazilian food.

D．Fast economic development has brought devastating changes to the natural environment in Brazil.

键槽卡钻只发生在（）过程中。