Two important events that lead to a successful germination of seeds is:
A. length of daylight
B. sunlight and water
C. sunlight and temperature
D. daylight and night time temperatures
E. relative humidity and water content of the seed
B. sunlight and water
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Which microorganisms commonly thrive in drinking water distribution systems and how might they impact human health?
What will be an ideal response?
Answer the following statements true (T) or false (F)
1.On the island of Guam, a single type of nonnative organism, the black-footed ferret, is responsible for the disappearance of at least 12 species of birds and small reptiles from the island. 2.Immigration is the migration out of a particular area. 3.Emigration is the migration out of a particular area. 4.When exponential growth is plotted over time, an S-shaped curve emerges. 5.When logistic growth is plotted over time, a J-shaped curve emerges.
You're a doctor visiting with a patient, and you remind her to get her flu vaccination this year. She looks at you quizzically and says, "I don't need a vaccination. I got one last year." Which of the following would be the most appropriate biological explanation?
A. " Flu vaccinations wear off after a year, so you should really get another one." B. "The flu virus evolves very rapidly, so last year's vaccination will not be as effective as this year's vaccination." C. "Well, you should be okay then." D. "Well, it is free."
How are the sympathetic and parasympathetic nervous systems similar?
What will be an ideal response?