Ch.50 - EcologySee all chapters
All Chapters
Ch.1 - Introduction to Biology
Ch.2 - Chemistry
Ch.3 - Water
Ch.4 - Carbon
Ch.5 - Biological Molecules
Ch.6 - Cells
Ch.7 - The Membrane
Ch.8 - Energy and Metabolism
Ch.9 - Respiration
Ch.10 - Photosynthesis
Ch.11 - Cell Signaling
Ch.12 - Cell Division
Ch.13 - Meiosis
Ch.14 - Mendelian Genetics
Ch.15 - Chromosomal Theory of Inheritance
Ch.16 - DNA Synthesis
Ch.17 - Gene Expression
Ch.18 - Regulation of Expression
Ch.19 - Viruses
Ch.20 - Biotechnology
Ch.21 - Genomics
Ch.22 - Development
Ch.23 - Evolution by Natural Selection
Ch.24 - Evolution of Populations
Ch.25 - Speciation
Ch.26 - History of Life on Earth
Ch.27 - Phylogeny
Ch.28 - Prokaryotes
Ch.29 - Protists
Ch.30 - Plants
Ch.31 - Fungi
Ch.32 - Overview of Animals
Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
Ch.36 - Vascular Plant Transport
Ch.37 - Soil
Ch.38 - Plant Reproduction
Ch.39 - Plant Sensation and Response
Ch.40 - Animal Form and Function
Ch.41 - Digestive System
Ch.42 - Circulatory System
Ch.43 - Immune System
Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
Ch.46 - Animal Reproduction
Ch.47 - Nervous System
Ch.48 - Sensory Systems
Ch.49 - Muscle Systems
Ch.50 - Ecology
Ch.51 - Animal Behavior
Ch.52 - Population Ecology
Ch.53 - Community Ecology
Ch.54 - Ecosystems
Ch.55 - Conservation Biology

Concept #2: Biotic and Abiotic Factors

Concept #3: Weather and Climate

Concept #4: Earth's Angle and Sunlight

Concept #5: Mountains and Air Currents

Concept #6: Biome and Biomass

Concept #7: Terrestrial Biomes and Tropical Rainforest

Concept #8: Desert and Savanna

Concept #9: Temperate Grasslands and Forests

Concept #10: Taiga and Tundra

Concept #11: Aquatic Biomes

Concept #12: Temperature in Aquatic Biomes

Concept #13: Freshwater Biomes

Concept #14: Marine Biomes

Additional Problems
Which is the correct sequence for levels of biological organization occurring beyond the individual? a.  Population - ecosystem - community - biosphereb.  Community - population - ecosystem - biospherec.  Community - population - biosphere - ecosystemd.  Population - community - ecosystem - biospheree.  Ecosystem - population - biosphere - community
All ecosystems: a.  Need a continuous outside energy sourceb.  Once mature never changec.  Are entirely self-sufficientd.  Consist of only living organismse.  None of the above are correct
Which of the following might be an investigation of microclimate?A) the effect of ambient temperature on the onset of caribou migrationB) the seasonal population fluctuation of nurse sharks in coral reef communitiesC) competitive interactions among various species of songbirds during spring migrationD) how sunlight intensity affects plant community composition in the zone where a forest transitions into a meadow
The oceans affect the biosphere in all of the following ways excepta. producing a substantial amount of the biosphere's oxygen.b. removing carbon dioxide from the atmosphere.c. moderating the climate of terrestrial biomes.d. regulating the pH of freshwater biomes and terrestrial groundwater.
Which statement about dispersal is false?a. Dispersal is a common component of the life cycles of plants and animals.b. Colonization of devastated areas after floods or volcanic eruptions depends on dispersal.c. Dispersal occurs only on an evolutionary time scale.d. The ability to disperse can expand the geographic distribution of a species.
If the direction of Earth's rotation reversed, the most predictable effect would bea. a big change in the length of the year.b. winds blowing from west to east along the equator.c. a loss of seasonal variation at high latitudes.d. the elimination of ocean currents.
Which of the following is NOT a common animal adaptation to desert conditions?A. reliance on algal blooms as a main food sourceB. be active primarily at nightC. release highly concentrated urineD. live in burrows
Which of the following correctly identifies an abiotic factor influencing the distribution of biomes?A. the amount and type of bacteria present in a given patch of soil.B. the total number of plant-eating insects in a given space.C. elevation of a land mass above sea level.D. the total number of species in a given area.
Why will rising CO2 levels in the atmosphere lower the pH of the ocean and other bodies of water? 
A community is best described as the collection of:A. ecosystems found in a particular areaB. populations of different species that live in a particular area.C. abiotic resources found in a particular area.D. biotic interactions that occur in a particular area.