The Navajo are the second largest tribe in the U.S. and they have the largest reservation stretching across Colorado, Utah, New Mexico and Arizona with over 25,000 square miles. They were also among the largest group of Indians to migrate to Los Angeles in the 1950s and 60s.
The ionosphere is a shell of electrons and electrically charged atoms and molecules that surrounds the Earth, stretching from a height of about 50 km (31 mi) to more than 1,000 km (620 mi).
The answer is C. Electron. The electrons of an atom, in the electron cloud, are the only subatomic particles that have a negative charge. The neutron, which is in the nucleus, has no charge, so it is neutral. The proton, which is also in the nucles, has a positive charge. I hope this helps you out.