Refer to Figure 22-2. The common hominid ancestor would be found at the position labeled:a
13
b. 12
c. 11
d. 10
e. 9
D
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The idea that Earth orbits the sun is referred to as ____ of the solar system, because of the scientist who first proposed
it.
a. the Galilean theory b. Newton’s model c. Einstein’s theory d. the Copernican model e. Darwin’s theory
Volume increases by the ____ of the diameter,
and surface area increases by ____ of the diameter. a. square; doubling b. square; the cube c. cube; the square d. cube; the cube e. none of these is the correct answer
___________ found in areas of the body such as the mouth and intestines and that help to prevent infection by pathogens are called normal flora.
Fill in the blank(s) with the appropriate word(s).
Homologous structures are found in organisms that share a common ancestry. They can be used to classify organisms. However, homologous structures may have different functions. Which of the following is an example of a homologous structure?
A) embryonic stages of development B) human tail bone C) human appendix D) forelimbs of vertebrates