Throughout its long history, the ocean has provided Earth with numerous services, including climate regulation, trade and transport, and food production. In addition, the ocean provides an important habitat for a variety of animal species. The ocean, a body of salt water, spans about 71 percent of Earth’s surface and is called the “world ocean”...

Wildlife is a term that refers to all of the animals and plants that live naturally in their own environments. They provide food, shelter, mates, and other services to their ecosystems. These organisms are essential to the balance of nature and must be protected. Thousands of species of animal and plant populations are threatened with...

Climate change is a global phenomenon, affecting all countries and areas on Earth. Scientists agree that it is caused by human activities, such as the burning of fossil fuels, and has the potential to cause devastating effects worldwide. The Sun is a main source of energy on Earth and plays a major role in the...

The Ocean is one of the most complex and fascinating things on Earth. It contains a tremendous amount of life-forms, and scientists are just beginning to learn about it. In fact, more than 80 percent of it has never been mapped, explored, or even seen. It’s the largest and most powerful reservoir of water on...

Wildlife is the diversity of animals, plants, and other organisms that live in a particular place. Its functioning depends on interactions between animals, plants, and microorganisms. Wildlife has a significant influence on human society. It helps maintain the balance of nature and the food chain. People also use wildlife for recreation such as fishing, hunting,...

Climate change is the long-term average warming of the planet’s atmosphere and oceans. It’s happening because human activities are releasing more greenhouse gases into the air, including carbon dioxide and methane. The concentrations of these gases are already higher than at any time since the beginning of the industrial age. It’s largely due to burning...

The Ocean is the body of salt water that covers approximately 70.8% of the Earth’s surface and contains 97% of all the world’s water. Despite its vast size, the ocean has yet to be fully mapped and explored. This large body of water plays an important role in the climate, weather patterns, and the food...

Wildlife is a term that describes the undomesticated animals or plants that exist naturally in an environment free of human intervention. It can be found in all ecosystems, including deserts, grasslands, forests, and plains. A major concern for the world’s wildlife is that of extinction of species and habitat loss. According to the International Union...

The climate system on Earth responds to the sun’s energy and the amount of greenhouse gases in the atmosphere. Those gases act as a kind of heat shield, helping to trap energy in the Earth’s surface and keep it from escaping into space as infrared radiation. Scientists believe that most of the extra energy coming...

The ocean is a huge body of salt water that covers 71 percent of Earth’s surface. It has traditionally been divided into four regions, the Pacific, Atlantic, Indian, and Arctic oceans, though some oceanographers have dubbed the Southern Ocean the fifth global ocean. It is the world’s largest heat reservoir, and a key factor in...