Describe what e-wastes are and why they are a problem
What will be an ideal response?
E-wastes are the rapidly growing numbers of cell phones, computer components, fax machines, televisions, VCRs, and other electronic equipment that are turning up in landfills as they become obsolete and thus unwanted. These items contain toxic metals such as cadmium and lead that can pose a danger to the environment and human health if released into the air (via incineration) or water (via leakage into groundwater). Some e-wastes may also contain lithium and other substances that can explode if they are exposed to heat, such as the heat in an incinerator. Many discarded electronic devices can be disassembled for recycling. Cell phones contain gold, and many recycling companies are more than willing to collect used cell phones to harvest the gold and other valuable components. Although recycling rates have improved in the last decade, the vast majority of e-wastes are still ending up in landfills and incinerators.
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U.S. geothermal energy is most available in ________
A) Texas B) the West C) the Northeast D) the Southeast E) the Florida Keys
Which of the following is incorrect?
A) Increased atmospheric carbon dioxide (CO2 ) causes warming temperatures. B) Scientists can definitively (100% certainty) attribute climate changes to anthropogenic causes alone. C) Global warming affects overall climate. D) Human activities have increased the amount of atmospheric greenhouse gases.
When the top of a sea arch collapses or when a sea cliff retreats, the erosion resistant pillar left standing is known as a(n) _______________. (two words)
Fill in the blank(s) with correct word
Many scientific advances have been made toward accurately collecting evidence for global climate change. Explain one technique used: (1 ) to measure changes that have occurred in atmospheric CO2 over the past 500,000 years; and (2 ) to measure the
long-past temperatures over this same period of time. What will be an ideal response?