Darwin was very interested in why animals on distant and isolated landmasses appear related to animals on the mainlands, yet were very distinct. Which of the following types of evidence would help Darwin make sense of his observations?
A. biochemical
B. biogeographical
C. fossil
D. anatomical
Answer: B
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The mode of infection for which of the following organisms is the ingestion of cysticercoid in an infected arthropod or by the direct ingestion of the egg? Autoinfection may also occur
a. D. latum b. Hymenolepis nana c. Taenia saginata d. Taenia solium
Migrating cells move around the developing embryo using ____
a. electrical signals b. genetic markers c. apoptosis d. adhesive cues e. osmosis gradients
Slash-and-burn agriculture:a
is practiced by international corporations. b. is practiced by large scale cattle ranchers. c. includes fuel wood consumption. d. is practiced by many people in highly developed countries. e. is practiced by subsistence farmers.
This is not an obligatory step for bacteria to establish infection inside the host
A. attach to the host B. Producing symptoms C. multiply (grow) in the host D. enter the host E. exit from the host after infection