At a Glance

Life on Earth Chapter 30 How Ecosystems Work
At a Glance

The Flow of Energy: The energy captured by photosynthetic organisms is called primary productivity.
Organisms occupy different trophic levels based on how they acquire energy.
Food chains and food webs describe the feeding relationships within ecosystems.
Energy flows through trophic levels.
Biological magnification occurs as toxic substances are passed through trophic levels.

The Cycling of Nutrients
The carbon cycle is an atmospheric cycle.
The nitrogen cycle is an atmospheric cycle.
The phosphorus cycle is a sedimentary cycle.
Most water remains chemically unchanged during the water cycle.

Human Intervention in Energy Flow and Nutrient Cycling
Acid rain is caused by overloading the nitrogen and sulfur cycles.
Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability; Organisms occupy different trophic levels based on how they acquire energy.
Food chains and food webs describe the feeding relationships within ecosystems.
Energy flows through trophic levels.
Biological magnification occurs as toxic substances are passed through trophic levels.

The Cycling of Nutrients
The carbon cycle is an atmospheric cycle.
The nitrogen cycle is an atmospheric cycle.
The phosphorus cycle is a sedimentary cycle.
Most water remains chemically unchanged during the water cycle.

Human Intervention in Energy Flow and Nutrient Cycling
Acid rain is caused by overloading the nitrogen and sulfur cycles.
Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability; Food chains and food webs describe the feeding relationships within ecosystems.
Energy flows through trophic levels.
Biological magnification occurs as toxic substances are passed through trophic levels.

The Cycling of Nutrients
The carbon cycle is an atmospheric cycle.
The nitrogen cycle is an atmospheric cycle.
The phosphorus cycle is a sedimentary cycle.
Most water remains chemically unchanged during the water cycle.

Human Intervention in Energy Flow and Nutrient Cycling
Acid rain is caused by overloading the nitrogen and sulfur cycles.
Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability; Energy flows through trophic levels.
Biological magnification occurs as toxic substances are passed through trophic levels.

The Cycling of Nutrients
The carbon cycle is an atmospheric cycle.
The nitrogen cycle is an atmospheric cycle.
The phosphorus cycle is a sedimentary cycle.
Most water remains chemically unchanged during the water cycle.

Human Intervention in Energy Flow and Nutrient Cycling
Acid rain is caused by overloading the nitrogen and sulfur cycles.
Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability; Biological magnification occurs as toxic substances are passed through trophic levels.

The Cycling of Nutrients
The carbon cycle is an atmospheric cycle.
The nitrogen cycle is an atmospheric cycle.
The phosphorus cycle is a sedimentary cycle.
Most water remains chemically unchanged during the water cycle.

Human Intervention in Energy Flow and Nutrient Cycling
Acid rain is caused by overloading the nitrogen and sulfur cycles.
Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability
The Cycling of Nutrients: The carbon cycle is an atmospheric cycle.
The nitrogen cycle is an atmospheric cycle.
The phosphorus cycle is a sedimentary cycle.
Most water remains chemically unchanged during the water cycle.

Human Intervention in Energy Flow and Nutrient Cycling
Acid rain is caused by overloading the nitrogen and sulfur cycles.
Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability; The nitrogen cycle is an atmospheric cycle.
The phosphorus cycle is a sedimentary cycle.
Most water remains chemically unchanged during the water cycle.

Human Intervention in Energy Flow and Nutrient Cycling
Acid rain is caused by overloading the nitrogen and sulfur cycles.
Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability; The phosphorus cycle is a sedimentary cycle.
Most water remains chemically unchanged during the water cycle.

Human Intervention in Energy Flow and Nutrient Cycling
Acid rain is caused by overloading the nitrogen and sulfur cycles.
Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability; Most water remains chemically unchanged during the water cycle.

Human Intervention in Energy Flow and Nutrient Cycling
Acid rain is caused by overloading the nitrogen and sulfur cycles.
Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability
Human Intervention in Energy Flow and Nutrient Cycling: Acid rain is caused by overloading the nitrogen and sulfur cycles.
Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability; Interference with the carbon cycle is causing the greenhouse effect.

Biodiversity and Ecosystem Stability
Biodiversity and Ecosystem Stability

Legal Statement