Examlex
Which of the following sources of energy presents the fewest pollution problems under normal operating conditions?
Chemoautotrophs
Organisms that obtain energy by the oxidation of inorganic substances, such as hydrogen sulfide or ammonia, and use this energy to convert carbon dioxide into organic matter.
Bacterial Exotoxins
Potentially harmful proteins secreted by bacteria into their external environment, capable of causing various diseases in host organisms.
Cells
The basic building blocks of all living organisms, consisting of a nucleus and cytoplasm within a membrane.
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