A large effective population size is important so that a species
A. can maintain an adequate geographical range.
B. does not change its trophic relationships.
C. will not lose large amounts of genetic diversity.
D. can minimize edge effects.
E. can remain endemic to a small area.
C. will not lose large amounts of genetic diversity.
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With regards to mode of disease transmission, respiratory pathogens are generally ________, and intestinal pathogens are generally spread by contaminated ________
A) spread by direct contact / vectors B) spread by indirect contact / carriers C) more transmissible / needles D) airborne / food or water
Exposure to a light source ____
a. increases melatonin levels b. increase testosterone levels c. decrease testosterone levels d. is used to treat SAD and jet lag e. is used to treat some cancers
Osteoporosis may result if the activity of osteoclasts outstrips the activity of osteoblasts
Indicate whether the statement is true or false
Genetically modified (GM) salmon have now been approved for sale in the United States. What environmental concern has been expressed about these salmon? What is being considered to reduce this risk?
What will be an ideal response?