Humid Continental Climate.
The first blank is Harry Truman, who was President of the United States after FDR.
The second blank is the Soviets, since the Cold War was mainly characterised by the stalemate between the Communist superpower USSR and the democratic superpower US.
The surface features that is been developed when limestone is been dissolved by water and disappearing streams is Karst.
- Karst can be regarded as the type of landscape, and in this landscape bedrock are been dissolved which create sinkholes as well as sinking streams.
- It us usually associated with soluble rock types such as ;
limestone
marble
gypsum
Therefore, Karst is the right term.
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Answer: Two hydrogen nuclei come together to produce one helium nucleus and two protons, and energy is released.
Explanation:
All stars (including the Sun) at birth begin to fuse two hydrogen nuclei to form helium through nuclear fusion.
In this sense, nuclear fusion is the union of two light atoms, releasing energy in the process, which is the cause of the great luminosity of a star. Especifically, the hydrogen nuclei will begin to fuse, generating helium nuclei in the process and releasing huge amounts of energy.
To unerstand it better:
To shine, the stars transform their hydrogen into helium by means of nuclear fusion. When at half of its life a star is without hydrogen, the nucleus becomes entirely helium and the star declines, becoming colder and brighter due to the energy generated by the nuclear reactions, then the star begins to contract.
Nevertheless, if the star is bigger, this helium will be also consumed and the nucleus transformed in Carbon, then in Oxigen, and so on. Being the last transformation Iron until the star delivers all its energy.
