Describe the volcanoes that form the Hawaiian Islands, especially on the island of Hawaii. What will be an ideal response?
The Hawaiian Islands are all shield volcanoes, which get older with distance from the Hawaiian hot
spot, which lies beneath Kilauea. The island of Hawaii has five shield volcanoes, including Kilauea
and another active volcano, Mauna Loa, which is nearly 100 km across and stands more than 9.5 km
above the seafloor with a volume of 50,000 km3, making it the world's largest volcano.
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Eutrophication occurs when
A. fecal coliform bacteria enters drinking water. B. an industry returns heated water to its source. C. point source pollutants enter the groundwater. D. nutrient increase causes excessive aquatic plant growth.
How many half-lives are required to yield a mineral with 2,000 atoms of parent isotope and 30,000 atoms of daughter isotope? If the half-life of the parent-daughter isotope pair is 1.0 billion years, how old is the rock? Please show your work
What will be an ideal response?
According to the World Health Organization (WHO), ____ people face health problems because of undernutrition and another ____ people face health problems because of overnutrition.
A. 0.5 million; 1 million B. 1 million; 1.6 million C. 0.6 billion; 1 billion D. 795 million; 2.1 billion E. 1.6 billion; 2 billion
By digesting soil, earthworms:
a. change the structure of the soil. b. change the texture of the soil. c. change the chemical quality of the soil. d. all of these