To address the problem of preserving biodiversity, biologist Norman Myers and colleagues have identified various "hot spots" around the world. What exactly is a hot spot?
A) geographic areas that are warm year-round and never experience freezing temperatures
B) geographic regions where endangered species and humans connect with one another regularly on a regular basis
C) world areas with significantly higher extinction rates than the background extinction
D) global areas where the climate and geological events resulted in large numbers of species
D
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Indicate whether the statement is true or false.
Which of the following statements is NOT
related to the first law of thermodynamics?
a. energy flow is from a high concentration to a low concentration. b. the amount of energy in the universe is constant. c. energy cannot be created or destroyed. d. energy can change from one source to another. e. the energy of the universe has existed forever.
All of the following characterize a hibernating homeotherm, except
A) low blood pH. B) high CO2 level in blood. C) increased heart rate. D) decrease in body temperature.
The sperm structure that helps penetrate the egg cell is the ________
A) midpiece B) tail C) ATP D) acrosome