Answer:
40%
Explanation:
The index of openness measures how much a country is exposed to international trade. It is calculated by this formula:
Index of Openness= (Exports(X)+Imports (M))/GDP
Index of Openness= (2 billion+2 billion )/10 billion
Index of Openness= 0,4*100=40%
Radio-luminescent paints and signage, lantern mantles, vibrant ceramic glazes, and potassium-based salt alternatives are a few examples of items that contain radioactive substances.
An unstable radioactive material emits harmful radiation types. It is radioactive substances unstable because the electric force that seeks to separate the atom's nucleus from the rest of the atom is stronger than signage the strong nuclear force holding it together. The atoms will transform into more stable ones as a result of its instability.
Radioactivity can also be thought of in terms of energy. A radioactive atom radioactive substances contains more energy than it requires. When something has more energy than it requires, it will eventually lose signage that energy since the universe's energy tends to disperse. Energy in the universe cannot be generated or destroyed, therefore when a radioactive atom loses its excess energy through decay, it must go somewhere.
Learn more about radioactive substances here
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By the year of 2013 the number of high school students took classes that could earn them college credits in advanced placement or international baccalaureate course has increased to 33 percent, it is only 19 percent in the year 2003 so it had increase by 24 percent but the answer is 33 percent.
Answer:
MORE| JOBS RISES THE MORE INCOMES.
PLZ MARK BRAINLIEST HAVE A GOOD NIGHT.
Explanation: