Sequential growth of microorganisms in which the growth of one organism produces environmental conditions suitable for the subsequent growth of another organism is called ________.
Fill in the blank(s) with the appropriate word(s).
succession
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Ecosystem services include processes that increase the quality of the abiotic environment. Which of the following processes would fall under this category?
I) Keystone predators have a marked effect on species diversity. II) Green plants produce the oxygen we breathe. III) The presence of land plants builds soil. IV) The presence of diverse wetlands helps in flood control. A) only I and III B) only II and IV C) only I, II, and IV D) only II, III, and IV E) only I, II, and III
Blood vessels and tiny air sacs within lungs are lined by ________ epithelium
a. simple columnar b. all of the choices c. simple cuboidal d. simple squamous
Adaptive radiation is likely to have led to which of the following?
A. The divergence of a single pea aphid population into two distinct species. B. The 1,000 species of Drosophila found dispersed throughout the Hawaiian Islands. C. The evolution of the horse via changes in climate and food supply. D. The long period of equilibrium in a bat species in the Mariana Islands.
What was the most important adaptation of the reptiles and birds to life on land?
A. The impermeable egg B. The shelled egg C. The external egg D. The amniotic egg