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Human-Environment Interaction

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Presentation on theme: "Human-Environment Interaction"— Presentation transcript:

1 Human-Environment Interaction
Ch 30 sec 3

2 I. Traveling the Pacific
Early on, the people who settled in the Pacific learned how to navigate great distances between islands. They started going to nearby islands in small rafts. As they went farther out, they had to develop better methods of navigation. They used the stars, but also created charts out of sticks and shells. The sticks showed wave patterns and the shells were islands.

3 I. Traveling the Pacific
They also created huge voyaging canoes with double hulls to cross the oceans. They could carry large amounts of goods, and had sails to use the winds for power. They carried plants with them to use in the new lands they found, and sometimes built structures on the deck to protect people and goods.

4 I. Traveling the Pacific
Since the voyaging canoes were not useful in lagoons, they created outrigger canoes for traveling around their island homes.

5 II. Invasion of the Rabbits
Just like the people of the Pacific transported plants with them as they traveled, so did the Europeans when they began to settle in the area. When the English came to Australia, rabbits were brought for hunting and for food. Thomas Austin released 24 rabbits into Australia to hunt them. Since there are no predators for rabbits in Australia, they began to grow in number.

6 II. Invasion of the Rabbits
In a little over 40 years, those 24 rabbits turned into over one billion rabbits. Those rabbits destroyed the plant life and crops, and devastated pasture lands. To control the rabbits, foxes were brought in. However, the foxes also killed native animals. They finally infected the rabbits with myxomatosis and killed off 90 percent. But the survivors continued to breed and the numbers rose again.

7 III. Nuclear Testing Throughout the 1940s and 1950s, the United States conducted nuclear tests on uninhabited islands in the Pacific. In 1946 the U.S. went to Bikini Atoll to test weapons there, and moved the 167 residents to another island. They tested weapons there for 12 years, including the hydrogen bomb.

8 III. Nuclear Testing The bomb destroyed several small islands in the area, and the radiation made many people sick. In the late 1960s the government said the atoll was safe for humans, but testing on the people who moved back showed high levels of radiation. The island was cleared and clean up began again, but no one is allowed there still.

9 In your notebooks Write a half page summary of the lecture today.


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