Correct answer is B.
Explanation:
In their nucleus cells contain DNA. The DNA has information about size, shape and function of each cell. When the cell reaches it's full size it stops growing and starts doing whatever it's function is. If more cells are needed then the cell replicates. This explanation excludes answers A and C.
Male and female sexual cells are used to conceive a baby. These cells combine to form a new type of cells. In the first few weeks all types of cells are created. Then the creation of new types of cells stops and existing cells multiply in order to achieve needed number of cells. This explanation excludes answer D.
When we compare an adult person and a baby we can see that, for example, an adult has bigger bones than a baby. This was result of increasing number of existing types of cells without creating any new type.
Answer:
One
Explanation:
Even though Finland and North Korea are thousands of kilometers away from each other, with Finland being in Northern Europe, and North Korea in East Asia, there's only one country between them. The only country that separates these two countries is the largest in the world Russia. Finland of course borders the European, much more developed part of Russia, while North Korea borders the eastern part of Asian Russia, practically Siberia, which is much less developed. These countries are totally different from one another in every aspect, be it politically, socially, economically, geographically, climate etc.
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