6. The element He was first detected around 1868 in this structure of the Sun. Photosphere
Core
Corona
Chromosphere

Nuclear experimentation is a major global issue that affects relationships between countries. describe why countries try to limit the testing of nuclear weapons.

[bws.05]where would uncharged particles be most likely found in an atom? o on the electrons o inside the protons o inside the nucleus outside the nucleus

What two advantages do the coastal countries of west africa have over the sahel countriesfertile soil and mineral resources temperatures and terrain human resources and natural resources weather patterns and location