Which of the following elements has the lowest ionization energy? Question options:

A)

Hydrogen

B)

Beryllium

C)

Argon

D)

Helium

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.

There are main groups in the modern periodic table of elements

Geothermal energy for industrial use is available almost anywhere. a.true b.false