In 1977 Dr. Robert Ballard and J.F. Grassle discovered
a. underwater seamounts.
b. the midocean ridge.
c. the Titanic.
d. rift communities.
e. the Andrea Doria.
D
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Intracytoplasmic membrane systems housing vesicles known as chromatophores, which function in photosynthesis, are commonly found in
A) algae. B) green sulfur bacteria. C) most autotrophic organisms. D) purple phototrophic bacteria.
In which soil would the cactus receive the most appropriate amount of water for its needs?
a. soil A b. soil B c. soil C d. It would receive the appropriate amount of water from all the soil types.
Oxygen built up in the atmosphere approximately 2 billion years ago and
a. occurred due to carbon dioxide being split by lightning strikes. b. could not have occurred without the oxygen coming from outer space. c. destroyed ozone forming more oxygen. d. helped to form the ozone layer that is so important to life today. e. occurred because aerobic organisms required the oxygen.
The intermediate host for many flukes is a:
A. human. B. cow. C. dog. D. cat. E. snail.