The earliest forms of life on Earth obtained their energy from ________.
Fill in the blank(s) with the appropriate word(s)
Answer: Hydrothermal vents
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Birds that have long narrow bills used for eating bivalves and other invertebrates are:
a. gulls. b. pelicans. c. shore birds. d. tubenoses. e. skuas and jaegers.
A population with a large fraction of pre-reproductive individuals is common in _-developed countries; this population will most likely in size.
A. more; decrease B. less; increase C. less; decrease D. more; increase
Rubisco fixes carbon dioxide to which molecule:
A. glyceraldehyde 3-phosphate B. 3-phosphoglycerate C. ribulose 1, 5 biphosphate (RUBP) D. NADP+ E. ADP
Carbon dioxide, sulfur dioxide, methane, and nitrous oxide are believed to be ________ gases that could disrupt the temperature balance of the earth.
Fill in the blank(s) with the appropriate word(s).