Ecological Interactions and Communities Quiz

<p>The key concepts in ecosystem ecology are energy flows and nutrient cycling.</p> Signup and view all the answers

<p>They recycle nutrients back to autotrophs</p> Signup and view all the answers

<p>To recycle nutrients back to autotrophs</p> Signup and view all the answers

<p>Trophic efficiency refers to the percentage of production transferred between trophic levels. It is measured by dividing the energy or biomass at one trophic level by the energy or biomass at the next trophic level.</p> Signup and view all the answers

<p>A group of individuals of different species living together</p> Signup and view all the answers

<p>The percentage of production transferred between trophic levels</p> Signup and view all the answers

<p>The percentage of production transferred between trophic levels</p> Signup and view all the answers

<p>Positive and negative</p> Signup and view all the answers

<p>Decomposers play an essential role in recycling nutrients back to autotrophs by breaking down dead organic matter.</p> Signup and view all the answers

<p>They have consequences for the ecosystem</p> Signup and view all the answers

<p>Biomes are broad categories of ecosystems that correspond to geographic areas. They are characterized by similar climate and vegetation patterns.</p> Signup and view all the answers

<p>Predation and competition</p> Signup and view all the answers

<p>Nutrient pollution from human activities</p> Signup and view all the answers

<p>Human activities such as agriculture and fossil fuel combustion are altering the nitrogen cycle by increasing the amount of reactive nitrogen in the environment.</p> Signup and view all the answers

<p>Biodegradable pollution is linked to nutrient cycling, while non-biodegradable pollution is not</p> Signup and view all the answers

<p>Biodegradable pollutants can be cycled back into the ecosystem, while non-biodegradable pollutants accumulate in organisms' tissues</p> Signup and view all the answers

<p>Negative effects</p> Signup and view all the answers

<p>A problem caused by excess nutrients in receiving waters</p> Signup and view all the answers

<p>Agricultural practices and fertilizer use</p> Signup and view all the answers

<p>A negative effect on one species to the benefit of another, but does not result in death</p> Signup and view all the answers

<p>Biodegradable pollution can be broken down by decomposers and recycled back into the ecosystem, while non-biodegradable pollution persists in the environment and can accumulate over time.</p> Signup and view all the answers

<p>By transferring nutrients through their waste</p> Signup and view all the answers

<p>A negative effect on both species</p> Signup and view all the answers

<p>Carnivores at the top trophic levels are rare and have consequences for the ecosystem, as they require a large amount of energy and can affect the populations of their prey and lower trophic levels.</p> Signup and view all the answers

<p>They biomagnify through food webs</p> Signup and view all the answers

<p>Ecosystems are defined based on the question being asked, while biomes correspond to geographic areas</p> Signup and view all the answers

<p>All the environmental conditions and resources that allow the persistence and growth of the species</p> Signup and view all the answers

<p>By transferring nutrients through their waste</p> Signup and view all the answers

<p>Ecosystems vary in size and can be defined based on the question being asked. They can range from small microcosms to entire biomes or even the entire planet.</p> Signup and view all the answers