Radiometric dating of the most ancient fossils uses the
a. dating volcanic rocks above and below the fossil-containing layer of sedimentary rock.
b. ratio of carbon 14 to carbon 12 in a sample of the fossil.
c. counting of the rings of trees found with the fossils.
d. comparison of unknown fossils with fossils of known age.
e. transmission of radio waves through the fossil.
a
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A(n) ________ is any heritable behavioral, morphological, or physiological trait of an organism that has evolved over a period of time by the process of natural selection
Fill in the blank(s) with correct word
Gregor Mendel is known for
A) studying natural selection in the animal life on the Galapagos. B) breeding plants to demonstrate the logic behind inherited trait transmission. C) experiments that demonstrated the direction of blood circulation in the body. D) breeding chickens to reveal the laws of inheritance.
The medullary cavity is within the diaphysis of a long bone.
Answer the following statement true (T) or false (F)
An abrupt and transient change in membrane potential is called a(n) ____
a. electrical potential b. refractory potential c. threshold potential d. resting potential e. action potential