It is no secret that healthy natural environments _____ healthy human lives.
It is no secret that healthy natural environments contribute to healthy human lives.
Natural environments constitute air, water and soil, and will include everything related to these (including trees, plants, animals, etc.). A healthy natural environment will provide us pure water to drink, clean air to breathe, healthy soil to produce high-quality food (without adding fertilizer), great views (green trees, animals, etc.). All these contribute to healthier human lives. Our health is adversely impacted by contaminated air that we breathe (air-borne disease), contaminated water that we drink and cook our food in (water-borne disease) and contaminated food from polluted soil (either from man-made contamination, or by fertilizer, pesticide addition, etc.). If we can protect our natural environment, we can definitely lead a much healthier life. An example is eco-tourism, where tourists visit a natural area and enjoy it without disturbing it. National forests and parks are another great example of preservation of our natural resources.
It is no secret that healthy natural environments support healthy human lives. The negative impact of air pollution, poor water resources and exposure to the damaging effects of the sun contribute to disease and a higher mortality rates in people all over the world. The higher the socioeconomic class, the lower the mortality rate. This can be interpreted a few ways, but people who make more money, world-wide, can afford to have clean drinking water, they avoid smoking, they have access to air filtration products, and they know to wear sunscreen when they are out in the sun to protect themselves from the harmful rays that cause cancer, rendering them healthy as a whole. Conversely, people who populate the lower socioeconomic classes around the world suffer the impacts of an unhealthy natural environment. Clean drinking water can be challenging, if not impossible, to attain. Those who live in large, crowded cities suffer from the impact of environmental pollutants, which can cause damage to lungs and the body's cellular structure. Often, sun exposure is unavoidable, and sunscreen is not ever an option. The mortality rates for those in this socioeconomic class are much higher, supporting the truth that healthy natural environments support healthy human lives.