Each species occupies a certain
__________characterized by physical and chemical
features and by the array of other species living in it. Fill in the blank(s) with the appropriate word(s).
Answer: habitat
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Match the following items with the correct phrases.
_______1. The causative agents of dengue fever, filariasis, malaria, West Nile encephalitis, and yellow fever are all transmitted by ____________________. _______2. ____________________ transmit the causative agents of babesiosis, ehrlichiosis, Lyme disease, relapsing fever, and Rocky Mountain spotted fever. _______3. The causative agent of American trypanosomiasis (Chagas's disease) is transmitted by arthropods in a class of insects known as ____________________. _______4. ____________________ transmit the causative agents of epidemic typhus and trench fever. _______5. African sleeping sickness, leishmaniasis, and onchocerciasis are transmitted by various types of ____________________. a. biting flies b. bugs c. lice d. mosquitoes e. ticks
The chytrids in these micrographs are Batrachochytrium dendrobatidis. What reproductive form do chytrids use that distinguishes them from other fungi?
a. ascospores
b. zygospores
c. zoospores
d. basidiospores
Which of the following is a plant-derived ingredient that served as one of the world’s first antimalarial drugs?
a. digitalis b. aspirin c. quinine d. ephedrine
Many worker bees give their lives to save a bee hive from an attack by bears or other animals. In such cases, we now know that
A. each female worker is waiting to get her chance to reproduce. B. this is a case of bees consciously understanding the need to preserve the nest for their individual benefit-they might survive if all work together. C. These worker bees will have a reproductive benefit if the members of the hive survive. D. this is a case of sexual selection.