Essentials of Ecology

36 CHAPTER 2 Science, Matter, Energy, and Systems Atoms are incredibly small. In fact, more than 3 million hydrogen atoms could ...

CONCEPT 2-2 37 One example of the importance of ions in our study of environmental science is the nitrate ion (NO 3 ), a nutrie ...

38 CHAPTER 2 Science, Matter, Energy, and Systems Organic Compounds Are the Chemicals of Life Table sugar, vitamins, plastics, a ...

CONCEPT 2-3 39 Matter Occurs in Various Physical Forms The atoms, ions, and molecules that make up matter are found in three phy ...

40 CHAPTER 2 Science, Matter, Energy, and Systems In a chemical change, or chemical reaction, there is a change in the arrangeme ...

CONCEPTS 2-4A AND 2-4B 41 ing mass of air), flowing water, and electricity (flowing electrons). Another form of kinetic energy i ...

42 CHAPTER 2 Science, Matter, Energy, and Systems kinetic energy between substances in contact with one another), and convection ...

CONCEPTS 2-4A AND 2-4B 43 there will always be enough energy. Yet if you fill a car’s tank with gasoline and drive around or use ...

44 CHAPTER 2 Science, Matter, Energy, and Systems Systems Have Inputs, Flows, and Outputs A system is a set of components that f ...

CONCEPTS 2-5A AND 2-5B 45 or information is fed back into the system as an input and leads to changes in that system. A positive ...

46 CHAPTER 2 Science, Matter, Energy, and Systems THINKING ABOUT Hubbard Brook and Feedback Loops How might experimenters have e ...

ACADEMIC.CENGAGE.COM/BIOLOGY/MILLER 47 Life, economic and other human systems, and the earth’s life support systems depend on ma ...

48 CHAPTER 2 Science, Matter, Energy, and Systems example of each. What is the atomic theory? Distin- guish among protons, neutr ...

ACADEMIC.CENGAGE.COM/BIOLOGY/MILLER 49 DATA ANALYSIS Marine scientists from the U.S. state of Maryland have pro- duced the follo ...

Tropical rain forests are found near the earth’s equator and contain an incredible variety of life. These lush forests are warm ...

Cells Are the Basic Units of Life All organisms (living things) are composed of cells: the smallest and most fundamental structu ...

52 CHAPTER 3 Ecosystems: What Are They and How Do They Work? Biosphere Ecosystem Community Population Organism Parts of the eart ...

CONCEPT 3-1 53 In most natural populations, individuals vary slightly in their genetic makeup, which is why they do not all look ...

54 CHAPTER 3 Ecosystems: What Are They and How Do They Work? The Earth’s Life-Support System Has Four Major Components Scientifi ...

CONCEPT 3-2 55 Atmosphere Biosphere Crust (soil and rock) Biosphere (living organisms) Atmosphere (air) Geosphere (crust, mantle ...