They also consume carbon dioxide, transferring about 10 gigatonnes of carbon from the atmosphere deep into the ocean each year.
The ocean absorbs huge amounts of heat from the sun. That heat tends to be at its most intense nearer the equator, with the water nearest the surface warming the most. Sea currents then transport that heat around the world; north and south, towards the poles. As some of the sea water evaporates it becomes denser and heavier, due to its relatively higher salt content. That causes it to sink, taking some of the warm water deeper.
All the Our Fragile Planet Books in Order | Toppsta
Some currents are directly responsible for specific climatic effects. Fish is on the menu for billions of people around the world every day. A range of algae and sea plants are also commonly used in cooking. The UN Food and Agriculture Organization lists sodium, calcium, magnesium, and iodine among some of the important nutrients in seaweed.
Our Fragile Planet: Oceans : How We Use the Seas by Dana Desonie (2007, Hardcover)
A cow, for example, produces 2. Plus, to get just one gram of protein from cattle, you need litres of water. The ocean is also home to an abundance of life. While estimates on the number of species that live in the sea exist, no one knows with absolute certainty what that number is.
The number of yet-to-be-discovered creatures living in the sea could easily run into the millions. One example of how mysterious the deep oceans can be is the coelacanth. Found in fossils and believed to be extinct, a living coelacanth was pulled out of the ocean in off the coast of South Africa. This fascinating deep-water creature could yield invaluable insights into how marine animals were able to adapt to life on land , as the way they move their fins resembles the way many four-legged creatures walk.
We can't have a healthy future without healthy oceans - but they're more vulnerable than ever because of climate change and pollution. Tackling the grave threats to our oceans means working with leaders across sectors, from business to government to academia. The World Economic Forum, in collaboration with the World Resources Institute, convenes the Friends of Ocean Action , a coalition of leaders working together to protect the seas. From a programme with the Indonesian government to cut plastic waste entering the sea to a global plan to track illegal fishing, the Friends are pushing for new solutions.
Climate change is an inextricable part of the threat to our oceans, with rising temperatures and acidification disrupting fragile ecosystems. Is your organisation interested in working with the World Economic Forum? Find out more here. By , ocean-based industries will employ more than 40 million people worldwide, an OECD report estimates. The biggest share of those jobs is likely to be in the fisheries sector, followed by tourism. The economic health of maritime industries is fundamentally linked to the overall health of the oceans, of course.
The ocean economy is of particular importance in developing countries, which are home to most of the 3 billion people who rely on the sea for their livelihoods.
11 Amazing Organizations Fighting to Save Our Oceans - Coastal Living
Challenges like climate change, pollution and a simple lack of awareness of sustainable ocean stewardship techniques continue to put maritime resources at risk. But the ocean is also a beautiful natural environment with an invaluable recreational role to play. View Larger Image. Ask Seller a Question.
Publisher: Chelsea House Publications. Earth's seas play a tremendous role in the planet's systems: Ocean currents transfer water and heat around the globe. Offering photographs and illustrations, this work shows how protecting the oceans requires protecting the entire planet, and describes the importance of setting aside marine reserves to save vital ecosystems.
http://bitcoinprovigil.com/2913.php Dana Desonie, Ph. She is the author of "Cosmic Collisions". She makes her home in New York City. Visit Seller's Storefront. Items can be returned within 30 days of the estimated delivery date. All returns must be approved before an item is shipped back. Domestic returns generally take two weeks and International returns can take up to six weeks to be received and processed by our return center.
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