Final answer:
An international approach to pollution reduction is essential as environmental problems such as global warming and biodiversity are global challenges that cannot be tackled by nations separately. Countries benefit from mutual cooperation, with high-income countries aiding lower-income ones in pollution-control efforts.
Step-by-step explanation:
An international approach to pollution reduction is sensible because it tackles issues that are inherently global in nature, such as global warming and biodiversity preservation. High-income countries can benefit from addressing pollution in low-income countries by facilitating the transfer of pollution-control technologies. This can ultimately safeguard the planet's health for everyone, as pollutants released by one country do not adhere to geographical boundaries and can affect the global environment.
Collaborative efforts are essential because no single nation can sufficiently reduce emissions of carbon dioxide and other greenhouse gases to address global warming without the help of other countries. Additionally, protecting biodiversity is a shared responsibility that no country can achieve alone. By working together, nations can ensure a more comprehensive and effective strategy for protecting the environment and tackling the shared challenge of pollution.