Câu 1: Quan sát hình “Cấu tạo tế bào”, em hãy cho biết bộ phận có vai trò giúp tế bào thực hiện trao đổi chất với môi trường là? A. Màng sinh chất B. Chất tế bào
C. Màng sinh chất, nhân D. Nhân

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the

The type of bond found in many carbon-to-carbon bonds in canola oil but very few carbon-to-carbon bonds in butter, is ; c=cc-c c=c c=h c-h hope this .