An element has a relative mass of 35.45. It has 2 known isotopes, A with a mass of 35 and B with a mass of 36. Which isotope is the more common in nature?
A isotope A
B isotope B
They are equally common.
Not enough information to determine.

1.fossils 2.analogous organs 3.homologous organs

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey

Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the  pharynx, the  larynx, enters the  trachea, moves through the  bronchi  andbronchioles  till the alveoli.