Since 1955, the global life expectancy has risen to ____.
A. 48 years
B. 52 years
C. 71 years
D. 75 years
E. 78 years
Answer: C
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Phospholipids
A. are entirely hydrophilic. B. are either hydrophobic or hydrophilic depending on where in a cell membrane they are found. C. have a hydrophobic portion as well as a hydrophilic portion. D. are entirely hydrophobic.
Which of the following is not a way that volcanoes and magma can cause earthquakes?
A) Volcanic explosions cause seismic waves. B) Volcanoes can load the crust, causing faulting and earthquakes. C) Many volcanoes have steep, unstable slopes that can cause landslides that shake the ground. D) Moving magma within or below the volcano can cause earthquakes. E) All of these are ways that volcanoes can cause earthquakes.
Explain the three stages of demographic transition as theorized by Frank W. Notestein.
What will be an ideal response?
The pharmaceutical industry has an interest in preventing species extinction because
A. It wants to increase diversity in North America. B. They see the benefits of eco-design. C. People are healthier in a healthy environment. D. Undiscovered species may provide lucrative new drugs. E. Most taxonomists are drug makers.