Which type of heavy atomic nuclei are most common, and why?
A) Transuranium elements, for only very heavy elements are made in supernovae.
B) Odd numbered elements, because hydrogen is the building block for all heavier elements.
C) Even numbered elements, for helium is giant food for everything beyond itself.
D) Metals, for iron is the last abundant element formed before the type II supernova.
E) Noble gases, for they are the most stable elements.
Question 2
Which of the following statements about circumpolar stars is true at all latitudes?
A) They are the stars close to the north celestial pole.
B) They always remain above your horizon.
C) They make relatively small circles, traveling clockwise around the north celestial pole.
D) Like all other stars, they rise in the east and set in the west.
E) You cannot see them from the Southern Hemisphere.
Common skin signs. Each of the illustrations depicts a section through skin
Common skin signs are often evidence of an illness or disorder. An erosion or ulcer is an eating or ...
Atomic Number and Mass Number
The elements with these exceptions are
This living protozoan is the common Paramecium multimicronucleatum that moves by means of its numero