219 Module Two Google Earth Exercises Student Essay

1170 WordsMar 13, 20155 Pages
Amanda Horn SCI 219 Module Two Google Earth Exercises These questions include Chapters 4, 5, and 6. Fill out your answers in this document and submit your responses in Blackboard. Galapagos Islands Chapter 4. This island group is famous as the site at which Charles Darwin collected evidence for evolution of species. Because the islands are so isolated, they were free of human inhabitants until relatively recently. Most of the animals never developed a fear of humans. It is a popular ecotourist destination today because of its biodiversity and historic scientific importance. Questions: 1. Approximately how many islands can you see in this group? There are about ten islands clustered in the main group, with a couple of other minor…show more content…
If you zoom in on the place marker, you can see the texture of the reefs. If you zoom out from the view shown by our place marker, you’ll see how many patches of reef make up this complex. Australia has set aside about one-third of the reef complex as a marine protected area in which all extractive activities are banned. Overfishing and other destructive practices have been halted, but other problems still threaten the reef. Warm water has been causing bleaching (For reasons we don’t fully understand, when they’re stressed by warm water or other factors, the corals expel their algae symbionts. If the bleaching is too severe, the corals die). In recent years, bleaching incidents have become increasingly widespread and severe. In 2002, between 65 and 90 percent of the corals within the 284,000 km2 of the Great Barrier Reef showed signs of bleaching. Global warming can only make this situation worse. Another serious concern is that the increased CO2 concentrations are making ocean water more acidic, which interferes with the coral’s ability to create the calcium carbonate exoskeletons that create the reef. Some marine biologists warn that if current trends continue, all the coral could be dead within the next 50 years. Questions: 1. What term do biologists use to describe this cooperative relationship between coral and algae? Mutualism is a cooperative relationship where each member benefits the other. 2. What is the term for the

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