Which of the following human activities is impacting the water cycle the LEAST?
A) increase in asphalt and concrete surfaces
B) conversion of grasslands and forests into agricultural fields
C) increased processing of salt water to freshwater
D) increases in irrigated agriculture
Answer: C
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The sporangia of the bread mold Rhizopus are _____
A) asexual structures that produce haploid spores B) asexual structures that produce diploid spores C) sexual structures that produce haploid spores D) sexual structures that produce diploid spores
Which feature of Archaea is shared with Eukarya but not with Bacteria?
a. the sequestration of DNA into a nucleus b. the common occurrence of introns c. the chemical structure of the cell walls d. the plasma membrane structure e. a genome comprised of a single, circular molecule of DNA
What happens when a round cell expands in diameter?
a. Its surface area and diameter increase with the cube of its diameter. b. Its surface area and diameter increase with the square of its diameter. c. Its volume increases faster than its surface area does. d. Its surface area increases faster than its volume does. e. Its volume and surface area expand by the same proportion.
The jugular veins drain blood from the ____
a. heart b. lungs c. liver d. brain e. arms