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
Plastic poses several environmental risks, including leaching chemicals and toxins into surrounding ecosystems, threatening the health of local animal populations and releasing greenhouse gases into the air. The negative effects of plastic vary depending on the type of plastic in the environment, quantity and length of exposure time. Plastics contain compounds, such as PVC and BPA, elements deemed a health risk to humans and animals while the leaching of these compounds into air and waterways poses a health and safety risk for nearby organisms.Full Answer >
The chief danger of radiation is the damage it can cause to living cells. Radiation can damage the DNA inside a cell's nucleus, and if the DNA becomes sufficiently damaged, the cell can become cancerous. Exposure to high amounts of radiation, or lower amounts over a long period of time, can significantly increase the risk of developing cancer.Full Answer >
Global worming is caused by the retention of the energy of the Sun in the atmosphere. The Earth is warmed by light from the Sun. This light passes through the atmosphere and strikes the surface. Some of the energy is reflected back into space, while some is absorbed by the ground, water and air. The energy that isn't radiated back into space warms the Earth.Full Answer >
Each ton of recycled paper saves 17 trees and a multitude of other resources such as oil, water, landfill space and the energy used to produce paper. The average person in the United States uses approximately seven trees per year in various paper products, totaling 2,000,000,000 trees per year.Full Answer >