Am letting the picture doing the talk.
The answer is atomic radii; the size or radii of an atom increases from left to right, versus the ionization energies and electronegativities of atoms which increase from right to left.
The answer is C. Nicotine is the substance found in tobacco smoke that stimulates the brain.
Question 2: Answer is (B), Soil Conservation Act (1936)
Hope that helps!!!
Answer:
I don't understand what you are asking