The worldwide spread of ________ resulted in a pandemic between 1918 and 1919 that claimed 20 to 150 million lives
a. Haemophilus influenzae
b. influenza virus
c. Streptococcus pneumoniae
d. Yersinia pestis
Answer: B
You might also like to view...
A plant cell contains _____ genomes and an animal cell contains ______ genomes.
A. 3,2 B. 3,3 C. 2,3 D. 2,2 E. 1,1
Animals that regulate their body temperature independently of the environment are called
A) heterotherms. B) homeotherms. C) poikilotherms. D) biotherms. E) abiotherms.
The most recent mass extinction on Earth:
a. happened 65 million years ago when dinosaurs became extinct b. was 248 million years ago when Pangea formed c. is going on now and is due to human activities d. happened 544 million years ago during a period of massive glaciation e. occurred 360 million years ago, when 70% of marine groups were lost
The oldest fossils ____
a. demonstrate the widest distribution b. represent the most highly evolved organisms c. are buried deeper in the ground than newer forms d. are found in Africa e. are primitive marine vertebrates