Problems of the world today.
Ocean acidification is a growing environmental threat that threatens to reduce marine biodiversity in many corners of the world.
Climate change can bring problems of water supply as well as problems for agriculture.
Deforestation and the degredation of ecological systems can destroy the habitats of animals and birds.
Melting of polar ice and glaciers can bring changes. Changes to ocean currents can affect us. One of the latest studies from Marie Gardent and her team of the University of Savoie has assessed roughly 600 glaciers in French Alps and have concluded that generlly, glaciers in the French Alps have lost a quarter of their surface area in the past 40 years.
Pollution. Americans use approximately 2.2 billion pounds of pesticides every year. Many of which are harmful to environment. 46% of American lakes are too polluted for fishing, swimming, or aquatic life. More than one third of China's Yellow River is affected. About 80 % of urban waste in India ends up in rivers. Asian rivers are the most polluted in the world and have high levels of bacteria from human waste. Approximately 80% of sea pollution comes from land-
Global warming. Most scientists agree this is due to human activity. Current levels of greenhouse gases are much higher than they were in the pre-
The ozone layer has an important function for life on our planet by protecting us from harmful radiation. There is still a significant ozone hole over Antarctica. The levels of ozone-