Why is the total biomass of secondary consumers normally less than that of primary consumers?
What will be an ideal response?
Only about 10% of the energy from one trophic level passes on to the next.
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The gene that governs a cell's ability to synthesize methionine from inorganic precursors is labeled “met”. The designation met- indicates the ____.
a. normal allele
b. mutant allele
c. bacterium is biologically active
d. bacterium is biologically inactive
e. bacterium can make its own methionine
Mosses are an example of which of the following?
A. primary consumers B. detritovores C. decomposers D. autotrophs E. heterotrophs
Which one of the following best describes the proper sequence of steps involved in the scientific method? a. state hypothesis b. observe c. experiment d. support or disprove hypothesis e. form a prediction
A) b, a, d, e, c B) a, b, c, d, e C) b, a, e, c, d D) a, b, c, e, d E) e, b, a, c, d
Which term best describes the relationship between angiosperms and animal pollinators?
a. The plants coevolved with the animals. b. The plants competed with the animals. c. The plants have been driven to extinction by the animals. d. The plants had antagonistic relationships with the animals.