Increased levels of cesium radioisotopes released from the Fukushima nuclear power plant were observed in ____
a. blue whales
b. sharks
c. bluefin tuna
d. yellowfin tuna
e. swordfish
ANSWER: c
You might also like to view...
Florists often create brightly colored flowers by immersing the stems in colored water. Which
cells are primarily responsible for this color change?
a. phloem b. xylem c. xylem and phloem d. neither xylem nor phloem
What is the name of the enzyme that builds cDNA out of mRNA?
A. DNA helicase B. RNA polymerase C. Reverse transcriptase D. DNA polymerase
Peatlands differ from other wetlands in that
A) the rate of organic production exceeds the rate of decomposition. B) there is no outflow of water, resulting in increasing salinities. C) they are seasonal, filling with water during the wet season and drying out during the dry season. D) they have a two-way flow of water due to tidal action.
Of the over 19,000 new species described for the first time in 2009, more than half were
A) marine organisms. B) plants. C) insects. D) vertebrates.