Which organism can be considered a predator?
A) dandelion
B) wood warbler
C) honey bee
D) cow
B
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The half-life of 14C is 5,730 years. If you test a fossilized bone and find that it has 1/8th the 14C as a modern bone, you could conclude that it is approximately years old.
A. 5,730 × 3 = 17,190 B. 5,730 × 2 = 11,460 C. 5,730 × 1 = 5,730 D. 5,730 / 8 = 716 E. 5,730 × 8 = 42,960
Which of the following cerebral areas is correctly matched with its function?
a. occipital lobes-control auditory centers b. temporal lobes-control skeletal muscles c. frontal lobes-directly receive visual input d. parietal lobes-receive sensations of heat, touch, pressure e. substantia nigra-control learning and language
Group A streptococci are considered more virulent if their cytoplasmic membrane contains M protein
Indicate whether the statement is true or false
Before Darwin, scientists such as Lamarck envisioned evolutionary change as transformational—properties of an ensemble change because every member of the ensemble changes
Darwin's theory of evolutionary change was by contrast a variational one—the properties of an ensemble change because of the action of some sorting process acting on preexisting variation within the ensemble. Re-ferring to the figure above, describe the kind of sorting process that takes place when we use artificial selec-tion to change the characteristics of a breed of animals or plants and when natural selection operates on a population. What will be an ideal response?