Word Types: 307
Word Tokens: 721
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1 43 the
2 30 of
3 26 a
4 17 population
5 17 to
6 16 species
7 14 and
8 13 in
9 11 from
10 11 that
11 8 is
12 8 island
13 8 islands
14 7 as
15 7 its
16 7 may
17 7 on
18 7 with
19 6 galapagos
20 6 have
21 6 isolated
22 6 many
23 6 new
24 6 organisms
25 6 populations
26 5 birds
27 5 can
28 5 gene
29 5 pool
30 4 antelope
31 4 by
32 4 canyon
33 4 for
34 4 geographic
35 4 isolation
36 4 or
37 4 other
38 4 small
39 4 squirrel
40 4 such
41 4 this
42 4 when
43 4 which
44 3 all
45 3 barrier
46 3 barriers
47 3 be
48 3 blown
49 3 but
50 3 enough
51 3 gradually
52 3 has
53 3 it
54 3 mainland
55 3 not
56 3 one
57 3 range
58 3 second
59 3 south
60 3 speciation
61 3 their
62 3 white
63 2 allopatric
64 2 also
65 2 american
66 2 an
67 2 animals
68 2 apart
69 2 are
70 2 become
71 2 been
72 2 called
73 2 carried
74 2 chain
75 2 changes
76 2 closely
77 2 could
78 2 deserts
79 2 does
80 2 each
81 2 evolution
82 2 evolved
83 2 example
84 2 finches
85 2 founder
86 2 grand
87 2 harris
88 2 inhabit
89 2 interbreeding
90 2 later
91 2 more
92 2 occur
93 2 ocean
94 2 only
95 2 plants
96 2 related
97 2 river
98 2 sea
99 2 seeds
100 2 separate
101 2 tailed
102 2 than
103 2 they
104 2 thirteen
105 2 today
106 2 was
107 1 ability
108 1 accumulated
109 1 across
110 1 actually
111 1 after
112 1 allow
113 1 ancestral
114 1 any
115 1 at
116 1 back
117 1 beak
118 1 because
119 1 between
120 1 biologist
121 1 born
122 1 bridge
123 1 california
124 1 certain
125 1 changed
126 1 clinging
127 1 close
128 1 colonize
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130 1 colorado
131 1 completely
132 1 continents
133 1 contrast
134 1 correlated
135 1 course
136 1 covered
137 1 coyotes
138 1 creates
139 1 creeping
140 1 cross
141 1 currents
142 1 deep
143 1 defined
144 1 depends
145 1 derived
146 1 descended
147 1 develop
148 1 differ
149 1 dispersions
150 1 distances
151 1 divide
152 1 do
153 1 easily
154 1 eat
155 1 effective
156 1 effectively
157 1 either
158 1 else
159 1 emerge
160 1 emigrated
161 1 ernst
162 1 establish
163 1 event
164 1 evidence
165 1 evolutionary
166 1 evolve
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168 1 factors
169 1 far
170 1 feathers
171 1 feeding
172 1 few
173 1 finch
174 1 find
175 1 fish
176 1 flew
177 1 floated
178 1 follow
179 1 form
180 1 formation
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182 1 forth
183 1 founding
184 1 gave
185 1 genes
186 1 geographically
187 1 glacier
188 1 greatest
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190 1 hindered
191 1 how
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194 1 individuals
195 1 inhabits
196 1 initial
197 1 instance
198 1 interbreed
199 1 into
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201 1 isthmus
202 1 keep
203 1 key
204 1 laboratories
205 1 lakes
206 1 land
207 1 large
208 1 lead
209 1 less
210 1 life
211 1 likelihood
212 1 likely
213 1 limited
214 1 long
215 1 lowland
216 1 making
217 1 managed
218 1 marine
219 1 mayr
220 1 might
221 1 migrating
222 1 million
223 1 mode
224 1 most
225 1 mountain
226 1 mountains
227 1 move
228 1 multiple
229 1 must
230 1 necessarily
231 1 neighboring
232 1 north
233 1 now
234 1 nowhere
235 1 occasional
236 1 occurs
237 1 oceanic
238 1 opportunities
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240 1 origin
241 1 outdoor
242 1 over
243 1 own
244 1 panama
245 1 parent
246 1 passage
247 1 permit
248 1 pollen
249 1 potentially
250 1 preventing
251 1 recolonize
252 1 reproductive
253 1 rise
254 1 rivers
255 1 rode
256 1 rodents
257 1 s
258 1 same
259 1 seems
260 1 separates
261 1 separation
262 1 shorter
263 1 showcases
264 1 side
265 1 significant
266 1 similarities
267 1 similarly
268 1 single
269 1 smaller
270 1 so
271 1 some
272 1 southern
273 1 southwestern
274 1 split
275 1 states
276 1 storms
277 1 stray
278 1 strays
279 1 substantially
280 1 tail
281 1 ten
282 1 there
283 1 thereby
284 1 these
285 1 time
286 1 total
287 1 travel
288 1 tree
289 1 two
290 1 type
291 1 undergoes
292 1 undergone
293 1 underneath
294 1 underwater
295 1 united
296 1 volcanoes
297 1 waters
298 1 way
299 1 well
300 1 were
301 1 west
302 1 what
303 1 wide
304 1 wind
305 1 winds
306 1 world
307 1 years
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