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A _____________ is the role of a species in an environment and its interaction with the living and nonliving environments.

Answer anyone you know the answer to please thank you that’ll be very nice of you
1) after many generation an insect species evolved resistance to a popular pesticide. This occurred because spraying pesticides
A) killed most of the insect in the population
B) caused mutation in the insect species gene pool
C) caused another insect species to go extinct
D).selected for insects that were able to survive and reproduce
2) An herbicide killed 99% of a weed population. which of the following is the best biological explanation for whysome weeds were able to survive
F) some individual were able to evoke before the spraying
G) genetic variation in the population allowed some weeds to survive
H) the spray caused some individual to mutate and they were able to survive and reproduce
I) Each individual occupied a different ecological niche and so some were unaffected
5) in a population, natural selection acts on
A) heritavle difference
B) genetic mutation
C) homologous structure
D) analogous structure

the intermediate disturbance hypothesis suggests that with moderate disturbances to a site a greater number of species will result relative to very infrequent disturbance.
a. intermediate disturbance hypothesis
b. competitive exclusion hypothesis
c. Disturbance exclusion hypothesis
d. Intermediate exclusion hypothesis
e. they all mean the same thing.
this hypothesis states that no two species can occupy the same niche in the environment.
a. intermediate disturbance hypothesis
b. competitive exclusion hypothesis
c. Disturbance exclusion hypothesis
d. Intermediate exclusion hypothesis
e. they all mean the same thing.

1. inference
2. hypothesis
3. spontaneous generation
4. control
5. responding variable
6. manipulated variable
7. metabolism
8. stimulus
9. homeostasis
10. cell culture
11. cell fractionation
12. atom
13. electron
14. nucleus (chemistry)
15. element
16. isotope
17. compound
18. ionic bond
19. ion
20. covalent bond
21. molecule
22. cohesion
23. adhesion
24. solute
25. solvent
26. buffer
27. monomer
28. polymer
29. carbohydrate
30. monosaccharide
31. polysaccharide
32. lipid
33. nucleic acid
34. nucleotide
35. RNA
36. DNA
37. protein
38. amino acid
39. reactant
40. product (chemistry)
41. catalyst
42. enzyme
43. substrate
44. biosphere
45. species
46. population
47. community
48. ecosystem
49. biome
50. autotroph
51. producer
52. chemosynthesis
53. heterotroph
54. detrivores
55. food chain
56. food web
57. trophic level
58. biomass
59. transpiration
60. denitrification
61. limiting nutrient
62. greenhouse effect
63. biotic factor
64. abiotic factor
65. niche
66. symbiosis
67. mutualism
68. commensalism
69. primary succession
70. pioneer species
71. secondary succession
72. immigration
73. emigration
74. logistic growth
75. carrying capacity
76. density dependent limiting factor
77. density independent limiting factor
78. renewable resource
79. biodiversity
80. genetic diversity
81. biological magnification
82. nucleus (cell)
83. eukaryotes
84. prokaryotes
85. cytoplasm
86. nuclear envelope
87. chromatin
88. chromosome
89. nucleolus
90. ribosome
91. endoplasmic reticulum
92. Golgi apparatus
93. lysosome
94. vacuole
95. mitochondrion
96. chloroplast
97. cytoskeleton
98. centriole
99. cell membrane
100. cell wall
101. diffusion
102. equilibrium
103. osmosis
104. isotonic
105. hypertonic
106. facilitated diffusion
107. active transport
108. endocytosis
109. phagocytosis
110. pinocytosis
111. exocytosis
112. thylakoid
113. photosystem
114. stroma
115. anaerobic
116. aerobic
117. cytokinesis
118. chromatid
119. centromere
120. hybrid
121. allele
122. gamete
123. incomplete dominance
124. pure-bred
125. homozygous
126. heterozygous
127. dominant (genetics)
128. recessive (genetics)
129. transformation (genetics)
130. transcription
131. translation
132. codon
133. anti-codon
134. mutation
135. point mutation
136. frameshift mutation
137. selective breeding
138. hybridization
139. inbreeding
140. genetic engineering
141. transgenic
142. clone
143. karyotype
144. pedigree
145. sex linked gene
146. non-disjunction
147. theory
148. fossil
149. artificial selection
150. fitness (evolution)
151. adaptation
152. natural selection
153. common descent
154. homologous structure
155. vestigial organ
156. gene pool
157. direction selection
158. stabilizing selection
159. disruptive selection
160. genetic drift
161. speciation
162. reproductive isolation
163. behavior isolation
164. geographic isolation
165. temporal isolation
166. relative dating
167. index fossil
168. half-life
169. radioactive dating
170. endosymbiotic theory
171. adaptive radiation
172. convergent evolution
173. Coevolution
174. punctuated equilibrium
175. bacillus
176. coccus
177. spirillum
178. conjugation
179. capsid
180. lytic infection
181. lysogenic infection
182. retrovirus
183. pathogen
184. vaccine
185. antibiotic
186. neuron
187. dendrite
188. cell body
189. axon
190. myelin sheath
191. threshold
192. synapse
193. neurotransmitter
194. pupil
195. lens
196. retina
197. rod
198. cone
199. cochlea
200. semicircular canal
201. koch’s postulates
202. antibiotic
203. immunity
204. interferon
205. antigen
206. passive immunity
207. active immunity
208. antibody
209. humoral immunity
210. cell-mediated immunity

When two species compete for the same ecological niche, they cannot coexist because they are competing for the exact same resources. One species is always slightly better adapted for the niche than the other, so over time the disadvantaged species will either go extinct or shift to a different ecological niche. This situation highlights the concept of _______.
a.carrying capacity
b.competitive exclusion
c.limiting factor
d.biotic factor

When ecologist G. F. Gause raised two species of Paramecium (protists) together in laboratory cultures with limited resources, he found that one species (P. aurelia) persisted in his cultures while the other species (P. caudatum) disappeared over time. This is best described as an example of:
Select one:
a. character displacement
b. fundamental niche reduction
c. resource partitioning
d. competitive exclusion
Evolution by natural selection can result in changes in a species’ niche over time.
Select one:
true or false