Which began first?
A. Multicellular life in the ocean
B. Animals colonizing the land
C. Multicellular life in fresh water
D. Plants colonizing the land
Answer: A
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Plants exert greater forces to draw water up through the xylem than is possible with a vacuum pump
A. true B. false
To prevent swollen thyroid glands, many nations add iodine to
A. milk. B. soda pop. C. salt. D. processed meats. E. orange juice.
Atherosclerosis is now known to be a disease of
inflammation. Which of the following oral bacteria can also be involved in this disorder? a. Porphyromonas gingivalis b. Streptococcus mutans c. Lactobacillus spp d. Staphylococcus spp e. all of these
The first federally approved gene therapy for humans was designed to treat ____
a. severe combined immune deficiency b. Diabetes c. cystic fibrosis d. Hemophilia e. Leukemia