Answer: Evolutionary
Explanation: Evolution is the phase in which the environment related components faces the changes in their characteristics over the certain period of time. This process is the completely natural and selected by the nature.
Professor Polinski is also relating the bonding of the humans in pair form is a evolution process which helps in the nurturing and development of the children.Other given options are incorrect because they don't define the natural change for the survival.Thus the correct option is evolutionary.
Drilling oil wells reduces deforestation. The oil extraction process results in the release of toxic drilling by-products into local rivers, while broken pipelines and leakage result in persistent oil spillage. In addition, the construction of roads to access remote oil sites also signifies take trees out of the way.
Deforestation reduces the habitat for millions of species. Eighty percent of Earth’s land animals and plants live in forests, and many cannot survive the deforestation that destroys their homes. It also affects climate change. Forest soils are moist, but without protection from sun-blocking tree cover, they quickly dry out. Trees also help perpetuate the water cycle by returning water vapor to the atmosphere. Without trees to fill these roles, many former forest lands can quickly become barren deserts.
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A. Voluntary trade occurs only when all participating nations expect to gain.
