Ecology Review Sheet Answer Key - Identify 3 basic ways ecologists study the living world. What is the definition of an abiotic factor? A living part of an ecosystem. Describe the organization (hierarchy) of all the elements of the biosphere. Population growth rate is affected by these four components. Which increase the growth rate? Why is nitrogen important (*hint: Web by the time land nutrients have run off into the ocean, they get very dilute by the time they make it far from shore. A nonliving part of an ecosystem. What is the definition of a biotic factor?
A nonliving part of an ecosystem. What is the definition of a biotic factor? Why is nitrogen important (*hint: Explain the nitrogen cycle (include nitrogen fixation and denitrification in your answer). What do we need it for)? Which increase the growth rate? Web by the time land nutrients have run off into the ocean, they get very dilute by the time they make it far from shore. What is the definition of an abiotic factor? Describe the organization (hierarchy) of all the elements of the biosphere. A living part of an ecosystem. Identify 3 basic ways ecologists study the living world. Population growth rate is affected by these four components.