Answer: Malthusianism
Explanation: According to this theory, world population grows in geometric progression while food production in arithmetic progression.
For Malthus, food production grew arithmetically, while population growth grew alarmingly. For him, the world should have diseases, wars, epidemics, he also proposed a birth control policy so that there was a balance between food production and population.
They were the basic foundation for our great nation to be built upon.
It is to be noted that the explanation for why we can't see around corners but can hear sounds around corners is that: the wavelengths of sound waves are longer relative to that of light waves.
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What is a wavelength?</h3>
A wavelength is a physics phenomenon which is indicative of the distance between the displacement in a wave or the distance that exists between two successive crests of a wave.
Thus, the explanation above stands for why we e can't see around corners but can hear sounds around corners.
Learn more about wavelength at;
brainly.com/question/10728818
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I don’t understand your question, can you go into more detail please