Which methods will move carbon dioxide into the atmosphere?
a. Aerobic respiration and burning of fossil fuels
b. Burning of fossil fuels and sedimentation
c. Sedimentation and photosynthesis
d. Decomposition and diffusion
e. Aerobic respiration and sedimentation
a
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Bryophytes differ from all other land plants in
that they
a. possess swimming sperm. b. have stomata. c. have dependent sporophytes. d. exhibit alternation of generations. e. protect the embryo inside parental tissue
Boa constrictors on an island are an example of a(n)
A. organ. B. ecosystem. C. cell. D. organism. E. population.
Answer the following statements true (T) or false (F)
1. Some conifers shed their leaves seasonally. 2. The fossil record shows that angiosperms evolved directly from the Gnetophytes. 3. Incomplete flowers can be perfect flowers but imperfect flowers cannot be complete flowers. 4. Stamens and carpels are, in fact, modified sporangia-bearing leaves.
What field of science studies life's origin and distribution in the universe?
a. Geology b. Herpetology c. Biology d. Astrobiology e. Ornithology