Biology Now, 2e

386 ■ CHAPTER 21 Ecosystems ECOLOGY A loss of 500 million tons of phytoplankton each year could potentially affect the ocean’s N ...

Here and Gone ■ 387 NPP in terrestrial ecosystems NPP in aquatic ecosystems >800 600–799 400–599 200–399 100–199 0–99 Net pri ...

Data on net primary productivity (NPP)—the total energy available in an ecosystem for the growth and reproduction of primary pro ...

Here and Gone ■ 389 But correlation does not prove causation, and much more work needs to be done to support the idea that globa ...

390 ■ CHAPTER 21 Ecosystems REVIEWING THE SCIENCE ● (^) An ecosystem consists of communities of organisms and the physical envir ...

Here and Gone ■ 391 (^8) Place the following elements of the scientists’ study of oceanic phytoplankton levels in the correct or ...

Answers ■ A1 Answers Q2: At what point in the scientific method would a scientist decide on the methods she should use to test h ...

A2 fiffAnswers Figure 1.5 Q1: Give a possible hypothesis that could be tested by weighing the bats. A1: Hypothesis: Bats with WN ...

Answers ■ A3 Wall Street Journal is a respected newspaper, it tends to have a conservative bias, especially since being bought b ...

A4 fiffAnswers A2: A blog could be listed either under social media or under secondary literature, depending on the quality of t ...

Answers ■ A5 A2: “Herd immunity” means that fewer people contract the disease, and therefore vulnerable people are less likely t ...

A6 fiffAnswers A1: When you shake the bottle, the olive oil will form small beads of oil. As the bottle rests, these beads of oi ...

Answers ■ A7 A3: Oxygen is sharing two electrons with carbon. Carbon is sharing two electrons with oxygen and one electron with ...

A8 fiffAnswers Q2: Why can’t ions (such as Na+) cross the plasma membrane without the help of a transport protein? A2: The elect ...

Answers ■ A9 A2: Only photosynthetic organisms can create organic molecules from inorganic molecules, and animals cannot carry o ...

A10fiffAnswers A2: ATP and NADPH. Q3: What are the two major products of photosynthesis? A3: Glucose and oxygen. Figure 5.8 Q1: ...

Answers ■ A11 Figure 6.3 Q1: Name one similarity between cell division in prokaryotes and cell division in eukaryotes. A1: Both ...

A12 fiffAnswers Figure 6.10 Q1: During meiosis, does random assortment occur before or after crossing-over? A1: A f ter. Q2: Wha ...

Answers ■ A13 Q3: Draw a Punnett square for a genetic cross of two heterozygous, black-coated dogs. What are the phenotype and g ...

A14 fiffAnswers CHAPTER 8 END-OF-CHAPTER ANSWERS chromosomes, genes, loci, alleles d gene therapy: 3, in vitro fertilization: 5 ...