Produced without using artificial chemicals:

Many people are against the use of chemicals to preserve food because.A．chemicals are not

A．They will face extinction without artificial reproduction.B．They will have to migrat

This report was produced by the Government in （) with the chemical industry.A、combinat

Farmers use chemicals and fertilizers in order to

Farmers use chemicals and fertilizers in order to

The sounds produced without the vocal cords vibrating are ______ sounds.A.voicelessB.voice