Answer:
Demographic transition
Explanation:
Demographic transition theory: The term "demographic transition theory" is described as a theory that tends to analyze on the changes in the death rate and the birth rate and is consequently dependent on the populations' growth rate. However, along with the "economic development," the tendency of death rate and the birth rate is considered as different.
In the question above, the given statement represents the demographic transition theory.
About 10 percent speak Swahili, the lingua franca of Southeast Africa; about 5 percent speak a Berber dialect; and about 5 percent speak Hausa, which serves as a lingua franca in much of the Sahel. Other important West African languages are Yoruba, Igbo and Fula.
It could be B.........................
<span>b. Representative electrons</span>
Firstly it is best to describe the shape and structure of an atom, an atom's system and structure is like of the solar planet, the heliocentric view where the sun is the neutrons and protons and the planets are the electrons. Moreover, the electrons are outside these neutrons and protons surrounding the entire system of its atomic structure. Its movement is like of a planet.
An energy level also known as electron shell, or just shell is a location around an atom where electrons with a specific energy value, or quantum number may be found.
