When current oil reserves become too expensive to extract, what are the other energy options?
What will be an ideal response?
Answers include:Looking for more oil that may be more difficult and expensive to extract.Consume or waste less oil; become more efficient.Find replacement sources of energy (non-oil non-renewables, or all renewables).
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The death of a star is characterized by a massive release of energy called a ____
A) nebula B) protostar C) supernova D) comet
The urea cycle does which of the following?
A) It generates molecules which can enter the common metabolic pathway. B) It removes the NH4+ which is produced by oxidative deamination. C) both a and b D) neither a nor b
In the northern hemisphere objects are deflected to the
A. right, irrespective of which way it is moving. B. right, but based on objects moving to the north or south only. C. left, but based on objects moving to the north or south only. D. left, irrespective of which way it is moving.
Study Table 1–1, pick one of the vital ecosystem services listed there, and investigate the reasons why it is placed where it is by the Millennium Ecosystem Assessment
What will be an ideal response?