Final answer:
The shift from preservation/conservation to environmentalism can be seen in the growing awareness and concern for the environment that gained prominence in the 1970s.
Step-by-step explanation:
The shift from preservation/conservation to environmentalism can be seen in the growing awareness and concern for the environment that gained prominence in the 1970s. This shift was driven by various factors such as overpopulation, shrinking food supplies, and increasing concerns about global warming. The environmentalism movement built on earlier conservation movements and focused on protecting the natural environment and biodiversity.
One of the key events that marked this shift was the Green Revolution of the 1970s. This revolution saw significant advancements in agriculture through the use of pesticides and new farming techniques, leading to exponential growth in agricultural production. As a result, environmentalists turned their attention to global warming and the crisis condition of the world's climate. Scientific research findings supported their concerns and showed the detrimental effects of climate change on animal biodiversity and human populations.