The element with the most stable nucleus and smallest mass per ...

[ENagel]

The element with the most stable nucleus and smallest mass per particle is
 
  A) uranium.
  B) argon.
  C) helium.
  D) hydrogen.
  E) iron.

Question 2

Process of Science: Climate models can match the historical record of the global temperature on Earth and conclude that human's increase of atmospheric CO2 is responsible for global warming. How might you test this conclusion?
 
  What will be an ideal response?

[flexer1n1]

Answer to Question 1

E

Answer to Question 2

The same climate models that match the historical record show no increase in the Earth's average temperature if they do not include an increase of atmospheric CO2 at the levels that we know are due to human activity.

[ENagel]

Thanks for the timely response, appreciate it

[nguyenhoanhat]

Excellent