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Ch. 34 The Biosphere: An Introduction to Earth's Diverse Environments
Taylor - Campbell Biology: Concepts & Connections 10th Edition
Taylor, Simon, Dickey, Hogan10th EditionCampbell Biology: Concepts & ConnectionsISBN: 9780136538783Not the one you use?Change textbook
Chapter 34, Problem 15

Tropical rain forests are the most diverse biomes. What factors contribute to this diversity?

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1
Identify the unique climatic conditions of tropical rainforests, such as high temperatures and significant rainfall, which create a stable environment that supports a wide variety of life forms.
Consider the structural complexity of the rainforest, with multiple layers like the canopy, understory, and forest floor, each providing different habitats and niches for various species.
Explore the role of high productivity in tropical rainforests, where abundant sunlight and moisture support rapid plant growth, leading to a rich supply of food and resources for a diverse range of organisms.
Discuss the evolutionary aspect, where the long-term climatic stability of tropical rainforests has allowed species to evolve and diversify over millions of years without major disruptions.
Examine the concept of interdependence among species in the rainforest ecosystem, where complex relationships such as symbiosis, predation, and competition further drive speciation and diversity.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Biodiversity

Biodiversity refers to the variety of life forms within a given ecosystem, including the diversity of species, genetic variations, and ecological processes. In tropical rain forests, high biodiversity is a result of complex interactions among species and their environments, which allows for a multitude of niches and adaptations. This richness supports a wide range of organisms, from plants to animals, contributing to the overall health and resilience of the ecosystem.
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Climate and Weather Patterns

Tropical rain forests are characterized by warm temperatures and high levels of precipitation throughout the year. This stable climate creates ideal conditions for plant growth, leading to dense vegetation and a variety of habitats. The consistent moisture and warmth allow for year-round reproduction and growth, which fosters a rich array of species and ecological interactions.
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Ecological Interactions

Ecological interactions, such as predation, competition, and symbiosis, play a crucial role in maintaining the diversity of tropical rain forests. These interactions help to shape community structures and influence species distributions. For example, mutualistic relationships between plants and pollinators or between fungi and tree roots enhance nutrient cycling and plant reproduction, further contributing to the biome's complexity and diversity.
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Related Practice
Textbook Question

Why do the tropics and the windward side of mountains receive more rainfall than areas around latitudes 30° north and south and the leeward side of mountains?

a. Rising warm, moist air cools and drops its moisture as rain.

b. Descending air condenses, creating clouds and rain.

c. There is more solar radiation in the tropics and on the windward side of mountains.

d. Earth's rotation creates seasonal differences in rainfall.

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Textbook Question

Phytoplankton are the major photosynthesizers in

a. The benthic realm of the ocean

b. The ocean photic zone

c. The intertidal zone

d. The aphotic zone of a lake

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Textbook Question
An ecologist monitoring the number of gorillas in a wildlife ­refuge over a five-year period is studying ecology at which level?a. organismb. populationc. communityd. ecosystem
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Textbook Question
What biome do you live in? Describe your climate and the factors that have produced that climate. What plants and animals are typical of this biome? If you live in an urban or agricultural area, how have human interventions changed the natural biome?
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Textbook Question

Use Figures 34.5C and 34.18 to predict how global warming (rapid increase in Earth's average temperature; see Module 7.14) might affect the water cycle.

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Textbook Question

Aquatic biomes differ in levels of light, nutrients, oxygen, and water movement. These abiotic factors influence the productivity and diversity of freshwater ecosystems.

a. Productivity, roughly defined as photosynthetic output, is high in estuaries, coral reefs, and shallow ponds. Describe the abiotic factors that contribute to high productivity in these ecosystems.

b. How does extra input of nitrogen and phosphorus (for instance, by fertilizer runoff) affect the productivity of lakes and ponds? Is this nutrient input beneficial for the ecosystem? Explain.

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