Why do you think that most cetaceans use sound for communication and echo-location?
a) Sound travels farther through water than light
b) The ancestors of these organisms had vocal chords, so they adapted to project sound in water
c) Cetaceans have ears so they can hear sounds that fish cannot
d) Cetaceans have developed a simple language for communication
e) Cetacean skulls are specially adapted for sound transmission
A
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With regards to productivity of an ecosystem, which of the following statements is accurate?
a. GPP is greater than NPP because of the metabolic process of photosynthesis. b. GPP is greater than NPP because of the metabolic process of respiration. c. NPP is greater than GPP because of the metabolic process of photosynthesis. d. NPP is greater than GPP because of the metabolic process of respiration. e. There is no significant difference between GPP and NPP.
Which of the following is NOT included in the concept of biodiversity?
A. diversity of climate B. diversity of ecosystems C. diversity of genes D. diversity of species
Following the wind dispersal of seeds, a plant becomes established in a new environment. This is an example of
a. artificial selection. b. habitat selection. c. uniform distribution. d. habitat use.
In 1868, the USS Wateree was carried several miles inland by a tsunami along the coast of ________.
A. Hawaii B. Chile C. Alaska D. Baja California E. Mexico