The USDA requires that food products from genetically modified organisms be clearly labeled as such
a. True
b. False
False
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True or False: Exponential growth depends on the per capita growth rate (r) of a population gradually increasing over time
A. true B. false
Scientists measured the pressure in the xylem of redwood trees at different heights and found that the higher they made their measurements, the lower the pressure. They extrapolated this to a pressure of zero, and concluded that the tallest a tree could grow is 122–130 meters. The tallest known tree on Earth is 112.7 meters. Which of the following most likely limits the height of trees?
A. amount of transpiration in leaves B. ability to take up CO2 C. strength of water cohesion D. amount of energy needed to pump water to the tops of the trees E. amount of photosynthesis in leaves
Define Chargaff's rules of the base composition of DNA
What will be an ideal response?
What were Darwin's two fundamental insights about the process of evolution?
a. The environment selects on variation in the traits of individual organisms; and organisms are in a constant struggle for existence. b. The environment selects on variation in the traits of individual organisms; and all species have descended from one or a few common ancestors. c. All species have descended from one or a few common ancestors; and over time populations, not individuals, evolve. d. Over time populations, not individuals, evolve; and evolutionary change is connected to envi-ronmental fit.