The major disadvantages of whaling include the potential extinction of some whale species, the unsafe levels of mercury that whale meat can contain and the potential harm to ecosystems that removing whales can cause. In addition, whale watching is a lucrative business in many parts of the world, and whaling could have an impact on that activity, according to Nature Publishing Group.Know More
A major problem with whaling centers on the impact to whale populations. For example, gray whales have been extinct in the Atlantic for hundreds of years. It is also believed that there may be as few as 4 percent of the total population of blue whales that lived before exploitation began.
Fewer whales can also have an impact on the ecosystem. When a whale dies, its body sinks to the bottom of the ocean. On the ocean floor, a whale's body provides food to many different creatures that normally do not have access to such an abundant food supply.
While many proponents of whaling claim that the practice creates jobs and puts money into the economy, it also has the potential to damage a country's economy. It has been estimated that marine tourism related to whale watching could generate $413 million each year. In addition, whale meat, which is one source of income from whaling, can contain dangerous levels of mercury and lead to mercury poisoning.Learn more about Human Impact
Many human activities cause pollution, habitat destruction and climate change, all of which are destructive to ecosystems. According to the World Wildlife Fund, the use of pesticides and fertilizers on farms has increased 26-fold over the last 50 years, which has caused increased damage to streams, rivers, lakes and the world’s oceans. Fertilizers are toxic to many types of aquatic life and they alter the chemistry of local waters.Full Answer >
Human impact on tundra regions includes melting permafrost caused by climate change and physical damage to ecosystems and habitats resulting from the mining and extraction of oil, natural gas and other minerals. Tundras may also suffer damage from oil spills, air pollution and ozone depletion within the upper atmosphere.Full Answer >
The biggest disadvantages of deforestation include loss of animal habitats, climate change, soil loss and hydrological factors. Deforestation involves the clearing of massive portions of the earth's forests.Full Answer >
A major disadvantage to burying trash in landfills is the potential to pollute surrounding soil and groundwater with toxins and leachate. When trash decomposes, it releases methane and other greenhouse gases that contribute to climate change and may also cause health problems to humans and animals.Full Answer >