Spills of refined oil are generally larger than those of crude oil. Indicate whether the statement is true or false
ANS: F
The crude oil spills are larger because their components do not dissolve easily in water. Information
can be found in the section Marine Pollutants May Be Natural or Human Generated.
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What plan did Europe introduce in 2005 to help the region fight climate change?
A) a program to become the world's leader in solar energy B) a tree-planting plan C) an emission trading scheme D) a research program to perfect carbon sequestration E) All of the choices are correct.
If numerical dating of rock unit A gave a crystallization age of 1.2 billion years, and numerical dating of rock unit F gave a crystallization age of 500 million years, then how old is rock unit E?
What will be an ideal response?
Cyanobacteria such as Trichodesmium play an important role in the oceans because they fix nitrogen gas.
Answer the following statement true (T) or false (F)
Systems that continually adjust slightly one way or another, within a range of tolerance, as they react to variations in inputs are at ____
a. output b. feedback c. dynamic equilibrium d. threshold e. overshoot