Tran made the timeline below to show the order in which great scientific theories were developed.

theory of gravity à cell theory à ? à theory of continental drift

which theory belongs in place of the question mark in tran’s timeline?

The best and the most correct answer among the choices provided by the question is the second choice. The theory in place of the question mark in Tran's timeline is the continental drift theory. I hope my answer has come to your help. God bless and have a nice day ahead!

The virus is considered to be are living item since they have hereditary material dnas or rnas. they can imitate and change. they respond to boosts, for example, radiation, chemicals, and warmth. they have antigenic properties. they are proficient to duplicate with a same hereditary constituent.

Molecules called lipids have long hydrocarbon chains that determine the way they act. they can be fats, oils, or hormones, and even exist in our cell membranes