+
Chapter 3: Ecosystem Ecology - Lesson 9: Article Review & ESPN

Chapter 3: Ecosystem Ecology - Lesson 9: Article Review & ESPN

See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

25 Sophia partners guarantee credit transfer.

221 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

Dead in the Water

Every summer for the past nine years, water with lethally low concentrations of oxygen has appeared off the Oregon coast. The hypoxia may be a sign of things to come elsewhere, finds Virginia Gewin.

From: NATURE - August 2010

Full Screen

Fixing the Global Nitrogen Problem

Humanity depends on nitrogen to fertilize croplands, but growing global use is damaging the environment and threatening human health. How can we chart a more sustainable path?

From: Scientific American February - 2010

Full Screen

Enriching the Sea to Death

An excess of nutrients flowing from the land into the sea has created serious environmental problems in many coastal waters. Only recently have measures been taken to forestall the worst effects.

From: Scientific American - 1998

Full Screen

Global Population and the Nitrogen Cycle

Feeding humankind now demands so much nitrogen-based fertilizer that the distribution of nitrogen on the Earth has been changed in dramatic, and sometimes dangerous, ways.

From: Scientific American - July 1997

Full Screen

The Prolific Afterlife of Whales

On the deep seafloor, the carcasses of the largest mammals give life to unique ecosystems.

From: Scientific American - 2010

Full Screen