Biocalculus
Biocalculus
15th Edition
ISBN: 9781133109631
Author: Stewart, JAMES, Day, Troy
Publisher: Cengage Learning,
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Chapter 8.3, Problem 38E

a.

To determine

To find: the magnitude of the change in algal community compare between the two lakes.

b.

To determine

To identify: the direction of the change in algal community compares between the two lakes.

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Community ecologists study the factors that determine the abundance of different species. The abundance of three algae species (in mg/mL) is quantified in two different lakes before and after an unusually hot summer. The coordinates of these four samples in R3 are Lake A: (92, 65, 40) and (95, 61, 47) before and after summer, respectively, and Lake B: (26, 56, 24) and (23, 60, 17) before and after summer, respectively. (a) How does the magnitude of the change in algal community compare between the two lakes? The magnitude of the change in algae species is greater for Lake A than B. The magnitude of the change in algae species is greater for Lake B than A. The magnitude of the change in algae species is the same for Lake A and B. (b) How does the direction of the change in algal community compare between the two lakes? O The direction of the change in algal community in Lake A is opposite that of Lake B. The direction of the change in algal community in Lake A is the same as that of…
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