Điền A,B,C vào chỗ trống:
A:Well.it is source that can not be replaced after use
B:Yes.These sources will become vital in the future
C:Well,when a source is used,it takes time to replace it
Mai:Hi,Nam.I am doing a project on sources of energy but i do not understand what a non-renewable sourceis
Nam......................................................
Mai:Oh!Can you be more specific?
Nam:...............................................
Mai:What happen to us when these sources run out?
Nam:....................................................
Loga
Sinh Học lớp 12
