A Sixth Mass Extinction

Click on the link and answer the questions
http://www.nytimes.com/2012/06/03/opinion/sunday/are-we-in-the-midst-of-a-sixth-mass-extinction.html?_r=0

1. What are some ways  endangered animals are being helped as stated in the article, and what do they do?

2.Why is saving the animals important to humans and the environment?
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Sea Ice in the Polar Regions

http://www.sciencedaily.com/releases/2012/11/121111153813.htm

1. Why is there such a large difference between the changes in the amount of sea-ice present in the two polar regions?

2. What purpose does the sea-ice have in these regions? What are the different consequences for the Arctic and Antarctic?

Mountain Meadows Dwindling

http://earthfix.opb.org/land/article/mountain-meadows-dwindling-in-the-pacific-northwes/

1. What could have prevented the disappearance of these mountain meadows?

2. What are the potential consequences if Mountain Meadows continue disappearing?