Ella wants to construct an electrochemical cell . A major material needed is a copper strip.
Ella doesn't have this material.
What else can she use.

Note : The copper strip is meant to act as the cathode ( where reduction takes place ).
Reduction = Gain of electrons.

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

Why does his teacher ask him to balance the equation by including the correct coefficient

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction