Like many geographical areas, the African Transition Zone is actually an imaginary region geographers have made to group together similar territories. In this case, the African Transition Zone separates the Sahara Desert environment and peoples of North Africa, from the tropical rain forests of Central Africa.
The northern hemisphere has a slightly greater 0.041% CO2 content in the air. The difference between the seasons is this. The northern hemisphere, which has the most population, industry, transportation, and nearly all deciduous trees, contains the majority of the Earth's landmass.
Therefore, as leaves start to grow in the spring, they absorb CO2 from the atmosphere, slightly lowering the concentration. Additionally, people use less heating in their homes and buildings, which lowers CO2 emissions .Because the southern hemisphere's large population centers, like Brazil, are primarily tropical, there is less heating in homes there. The same is true for most of Australia and some African nations. Trees and other plants are mostly evergreen due to the region's predominantly tropical and subtropical climate. For instance, Tasmania is home to the sole native deciduous tree of Australia. As a result, the southern hemisphere's carbon dioxide concentration, which is roughly 0.0400%, is slightly lower and less variable.
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The right option is; a. soil degradation
Soil degradation most plausibly accounts for the reduction in corn yield.
Soil degradation is an environmental problem in which the condition or quality of soil is reduced due to its improper use usually for agricultural or industrial purposes. Soil degradation can reduce the physical, chemical and biological quality of soil. Soil degradation results in loss of organic matter, soil contamination, fertility decline, and soil acidity or alkalinity which can greatly affect agricultural productivity.
Convection is a process which transfers the heat between the temperatures when fluid (i.e. liquid or gas) is in motion. Due to the presence of heat source, water temperature increases and also it will become less dense and rise. Hot air is less dense than cold. When air rises higher in the atmosphere its pressure gets down and it becomes colder.
