The correct option is 1) Density-dependent.
<h3>What is reason for the decline in the caribou population?</h3>
The major causing for the decline in the caribou population are the hunting, disease, diminished food availability, and climate change.
Caribou depends on the food and habitat resources of the Arctic ecosystem which has been destroyed by the human disturbance.
Increasing number of other large carnivores also impacted the population of the caribou.
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The Sahel part of Africa includes (from west to east) parts of northern Senegal, southern Mauritania, central Mali, northern Burkina Faso, the extreme south of Algeria, Niger, the extreme north of Nigeria, central Chad, central and southern Sudan, the extreme north of South Sudan, Eritrea, Cameroon, Central African Republic and the extreme north of Ethiopia
Traditionally, most of the people in the Sahel have been semi-nomads, farming and raising livestock in a system of transhumance, which is probably the most sustainable way of utilizing the Sahel. The difference between the dry North with higher levels of soil nutrients and the wetter South with more vegetation, is utilized by having the herds graze on high quality feed in the North during the wet season, and trek several hundred kilometers to the South to graze on more abundant, but less nutritious feed during the dry period
People living in the 21st century have a better life quality than people who lived in previous times. The statement comes with two different views, reasons for which can be stated. Though most of us can agree with the statement.
The 21st century can be a great time to live in because of the great advancements in science and technology which have paved new ways for people as well as for the world at large, to come up with new and innovative discoveries as well as inventions. This could eventually reduce the number of problems people may have been facing earlier.
The statement can be disagreed with as well because with the advancements coming up, the quality of life is decreasing since man is becoming more and more dependent on technology. Moreover, the environment too is being impacted to a great extent.
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