Which of the following is not an advantage of a body cavity?
A) It allows for the storage of eggs or offspring.
B) It provides for movement.
C) It provides a safe place for an expandable digestive tract.
D) It allows flexibility and safe storage of organs.
Answer: B
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Which level of organization includes all of the others in the list?
A. cell. B. tissue. C. organ. D. organism. E. population.
Which type of lake has the largest amount of nutrients?
A) eutrophic B) oligotrophic C) dystrophic D) lotic
When nitrogen oxides and sulfur dioxide combine with water vapor in the air, they are converted to nitric acid and sulfuric acid, respectively. This precipitation that then falls to the Earth is known as
A) decomposition acid. B) acid fog. C) acid deposition. D) acid precipitation. E) nitrogen precipitation.
After the decolorizer has been added, Gram-positive organisms are stained ________ and Gram-negative organisms are stained ________.
A. purple; purple B. purple; colorless C. purple; pink D. pink; pink