Which of the following statements are TRUE about energy transfer?
a. vegetarianism is equally as energy efficient as eating meat
b. most of the energy from one trophic level is transferred to the next trophic level
c. energy is lost between trophic levels as heat, metabolism, and waste
d. indigestible plant parts transfer energy to the next trophic level
e. all of the above
Answer: c. energy is lost between trophic levels as heat, metabolism, and waste
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What is the significance of the fossil Archaeopteryx?
a. It establishes the time sequence of the transition from dinosaur to birds. b. The bones of this animal were the first to be used for radiometric dating, which allowed the absolute age of the fossil to be determined. c. It was the first fossil discovered from which both physiological and anatomical data could be gathered. d. It was the first reptile–bird fossil discovered and helped to establish the relationship between birds and dinosaurs.
The first sexual reproducers were _____
a. archaeans b. aerobic bacteria c. cyanobacteria d. eukaryotes
Sampling error can be minimized by one or
more of the following.
a. using a large sample. b. conducting the experiment or observation only once. c. throwing out data that does not fit the conclusion. d. using a small subset of a larger population. e. more than one of these can minimize sampling error.
What would you predict would happen to a plant after being invaded by Rhizobium bacteria?
A) It would die. B) It would grow better. C) It would grow worse. D) It would wilt.