How does El Niño change the weather where you live??
What will be the ideal response?
ANSWER: Student answers may vary greatly, depending on whether they live in the United States or elsewhere. For students from the U.S. an appropriate student answer would be that during an El Nino event, a strong subtropical westerly jet stream often directs mid-latitude cyclonic storms into California and heavy rain into the Gulf Coast states. Over the tropical North Atlantic, El Nino tends to reduce the strength of easterly winds at high levels, which disrupts the organization of thunderstorms necessary for hurricane development. Hence, there are fewer hurricanes in this region during El Nino events, and this contributes to a reduced risk of U.S. hurricane landfalls. The opposite occurs during La Nina events, with more frequent hurricanes observed in the North Atlantic and fewer hurricanes in the Northeast Pacific. On average, tropical storms and hurricanes are almost 50 percent more likely to strike the United States during La Nina years as opposed to El Nino years.?
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Which of the following was a result of the Spanish-American War of 1898?
A) the American acquisition of the Lesser Antilles B) the American military defeat at Guantanamo Bay and surrender of all its Caribbean possessions to the Spanish C) the return of Cuba to Spanish rule D) The United States and Spain split Hispaniola, with Spain acquiring the Dominican Republic and the United States acquiring Haiti E) Cuban independence from Spain and the transfer of Puerto Rico to American sovereignty
The presence of specific polycyclic aromatic hydrocarbons (PAHs) in the red blood cells of seagulls indicates ________
A) recent exposure to pollutants from nuclear waste B) recent exposure to pollutants from oil spills C) long-term exposure to pollutants from oil spills D) long-term exposure to pollutants from nuclear waste E) nothing of concern as PAHs are normally present in red blood cells
What is some of the evidence establishing that climate change is currently occurring?
What will be an ideal response?
Negative feedback is an "unnatural process" that is generally detrimental to the functioning of an environmental system
Indicate whether the statement is true or false