Chapter 35.1, Problem 2LO

Summary Introduction

To write:

On the energy flow and biogeochemical cycling within and among ecosystems.

Given:

Energy flow and biogeochemical cycling happen within and among ecosystems.

Introduction:

In an ecosystem, the transfer of energy from one trophic level to the other is known as the energy flow. It is depicted in the form of food chains and food webs. A biogeochemical cycle can be defined as a pathway by which chemical elements and compounds flow through biotic (biosphere – living components) and abiotic (lithosphere, atmosphere, and hydrosphere – nonliving components) compartments of the Earth. For example, carbon cycle, nitrogen cycle, oxygen cycle, water cycle, phosphorus cycle, and sulfur cycle.