A hypothetical island lies far from any other landmasses. There are many different types of plants, but only one animal, a beetle, that can fly or walk from plant to plant and feeds by chewing leaves
Given that the beetle is not exploiting all of the resources on the island, which morphological change would be most likely to trigger an adaptive radiation of the beetles? A) a change in wing shape that improves flight speed
B) an additional segment on a pair of legs
C) a mouthpart that can pierce fruits and seeds
C
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Fluzone is a brand name for a very commonly given influenza vaccine. The vaccine is prepared by first harvesting flu viruses in chicken embryos and then breaking apart virus particles into protein subunits, thereby inactivating the virus. Your friend refuses to get the vaccine. Which of these statements is the only valid reason for her not to get the flu vaccine?
A. She could die from the vaccine. B. She could pass the virus onto her baby, causing the child to become autistic. C. She could catch the flu from the inactivated vaccine. D. She is allergic to eggs.
The individual credited for coining the term cancer is
A) Paget. B) Hippocrates. C) Folkman. D) Rous. E) Aristotle.
Why do populations that fragment in response to climate changes face a higher risk of extinction?
A. Population fragmentation leads to loss of genetic diversity. B. Populations which have moved are subject to new predators. C. Moving populations cannot breed as effectively. D. The number of young decreases for several generations in the new habitat. E. All of the answer choices are correct.
Fetal blood flows through_____________which project into the placental.
Fill in the blank(s) with the appropriate word(s).