The main function of salivary mucus is to
a. break down starch.
b. mechanically breakup food materials.
c. make the food particles sticky.
d. hydrate dry food particles.
e. do more than one of these
C
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Stevan Arnold offered slug meat to newborn garter snakes from different populations to test his hypothesis that the snakes' response to slugs _____
a. was shaped by indirect selection b. is an instinctive behavior c. is based on pheromones d. is adaptive
A niche is the location within an environment where a species lives
Indicate whether the statement is true or false
Which of the following are TRUE regarding phylogenetics?
A. Phylogenetic inference represent hypotheses about evolutionary relationship among organisms B. Phylogenetics is the study of how organs evolved C. Phylogenetics only works when we already know the true evolutionary relationships among organisms D. Phylogenetics is the study of the functional relationships among different groups of organisms
A/an _______ is defined as a collection of populations sharing a given habitat.
a) Biosphere b) Community c) Biome d) Ecosystem