CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Chapter 2, Problem 15TYK
SCIENTIFIC THINKING A recent experimental study looked at the combined effects of ocean acidification (see Module 2.15) and increased ocean temperatures, both aspects of climate change, on the growth of polyps, juvenile coral animals.
Researchers reported the average polyp biomass (in μg/polyp) after 42 days of growth under four treatments: a control with pH and temperature maintained close to normal reef conditions, a pH lowered by 0.2 units, a temperature raised by 1°C, and a combined lower pH and higher temperature. The results showed that polyp biomass was reduced somewhat in both the low-pH and high-temperature treatments, but the combined treatment resulted in a reduction in growth by almost a third—a statistically significant result. Experiments often look at the effects of changing one variable at a time, while keeping all other variables constant. Explain why this experiment considered two variables—both a higher temperature and a lower pH—at the same time.
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Chapter 2 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 2 - Fill in the blanks in this concept map to help you...Ch. 2 - Create a concept map to organize your...Ch. 2 - Changing the _____ would change it into an atom of...Ch. 2 - What is chemically nonsensical about this...Ch. 2 - A solution at pH 6 contains _____H+ than the same...Ch. 2 - Most of the unique properties of water result from...Ch. 2 - A can of cola consists mostly of sugar dissolved...Ch. 2 - Prob. 8TYKCh. 2 - In what way does the need for iodine or iron in...Ch. 2 - Use carbon-12, the most common isotope of carbon,...
Ch. 2 - In terms of electron sharing between atoms,...Ch. 2 - The diagram below shows the arrangement of...Ch. 2 - Prob. 13TYKCh. 2 - What do you think the effect on the properties of...Ch. 2 - SCIENTIFIC THINKING A recent experimental study...Ch. 2 - In agricultural areas, farmers pay close attention...Ch. 2 - This chapter explains how the emergent properties...
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