The smallest cellular microbes are ______.
A) Rickettsias
B) Mycoplasmas
C) Chlamydias
D) Both Rickettsias and Chlamydias
Answer: D) Both Rickettsias and Chlamydias
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Recall Stiling and Drake's experiments using chambers with elevated CO2. What are the implications of their experiment for farmers in the coming decades, if CO2 levels rise as predicted?
A. Farmers will see higher crop productivity and less insect damage, but the crops will be less nutritious. B. Farmers will see higher crop productivity and nutrition, but there will be more insect damage. C. Farmers will see lower crop productivity and nutrition, in addition to more insect damage. D. Farmers will see higher crop productivity, but there will be more insect damage and the crops will be less nutritious.
The last two remaining females from the region with the introduced snakes disperse and join
another group of widowbirds that are nesting 50 km away. There they find new mates and produce offspring. This group of birds would be considered a(n) __________.
a. population b. ecosystem c. community d. niche
Plankton that can be caught with a standard plankton net are called:
a. nanoplankton. b. picoplankton. c. microplankton. d. megaplankton. e. gigaplankton.
Four of the five answers listed below are
heterotrophic. Select the EXCEPTION.
a. consumers b. carnivores c. herbivores d. parasites e. producers