What is the difference between a community and an ecosystem?
A. A community includes interacting populations with their surrounding environment, while an ecosystem does not include the surrounding environment.
B. A community includes interacting populations without their surrounding environment, while an ecosystem includes the surrounding environment.
C. A community and an ecosystem are the same thing in ecology.
D. A community includes abiotic factors, while an ecosystem does not.
Answer: B
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In Noller’s fragment reaction,
a. RNA-met* mimicked the rRNA b. puromycin was used to mimic tRNA c. the 50S subunit was used to test the peptidyl transferase reaction d. digesting proteins eliminated activity e. digesting rRNA did not eliminate activity
Large bodies of water maintain relatively constant temperatures compared to terrestrial locations. Why is this so, and how is this feature of water important for life?
What will be an ideal response?
If the beetles survive by consuming cycad pollen, then whether the beetles should be considered mutualists with, or parasites of, the cycads depends upon the ____
A) extent to which their overall activities affect cycad reproduction B) extent to which the beetles are affected by the neurotoxins C) extent to which the beetles damage the cycad flowers D) distance the beetles must travel between cycad microsporophylls and cycad megasporophylls
The interior of an unstimulated neuron maintains a constant negative charge, called the ________
Fill in the blank(s) with correct word