Increased strength and reduced risk of kidney disease are benefits of cardiorespiratory fitness.
a. true
b. false
b. false
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The end of the Permian period was characterized above all by a mass extinction of:
a. shallow-water marine invertebrates b. dinosaurs and other large reptiles c. small mammals d. large mammals
Support for the succession mechanism of tolerance is found in research on plant communities that shows
A. that plants release toxins that prevent other species from establishing. B. succession is random and cannot be predicted by existing species. C. climax communities never form as predicted by Clements. D. succession is determined largely by species that exist in the ground as seeds or old roots. E. competition-tolerant species colonize first.
Which of the following is an aggregate fruit?
a. peas b. acorns c. pineapples d. strawberries e. cherries
How long can endospores survive?
A) Hours B) Days C) Months D) Years E) Potentially limitless