Helium
Hydrogen
Nitrogen
Magnesium
Oxygen
Carbon
Iron
Sulfur
Silicon
Neon
The inner core is the dense sphere of solid iron and nickle at the center of the earth.
<span>St. Lawrence River, the Great Plains, and the Rocky Mountains are major land forms that both Canada and the United States of America share. You could also say the great lakes. Hope I helped. </span>
Answer: True
Explanation: the theory of the island biogeography equilibrium modem describes that species have to get to a certain island from somewhere else which is the immigration part and other species have to migrate from the island as they run out of resources which is the extinction part. This theory shows that as the number of immigration increases and a new place is colonized the rate of extinction of species increases because there is more competition and limited resources for these species and vice versa.
The "spread of nuclear weapons and technology" is known as Nuclear Proliferation.
Answer: Option D
<u>Explanation:
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Nuclear proliferation is described as the spread of weapons , fissionable material, and nations that are not recognized as "Nuclear Weapon States" by the Treaty is known as the "Non-Proliferation Treaty or NPT" of Nuclear Weapons.
Proliferation is opposed by many nations due to fear of arise in nuclear warfare with nuclear weapons. This leads to de-stabilization of international or regional relations, or infringe upon the national sovereignty of states.
