18 Questions
What process results in a higher concentration of chemicals in apex predators within a food web?
Biomagnification
Which law of thermodynamics states that energy can be transformed but not created or destroyed?
First Law of Thermodynamics
What happens when resources are limited in an ecosystem and organisms strive to obtain them?
Competition arises
Which law states that mass is neither created nor destroyed in chemical reactions?
Law of Conservation of Mass
What is the main difference between bioaccumulation and biomagnification in an ecosystem?
Biomagnification transfers chemicals between trophic levels
In the context of ecosystems, what is the main consequence of predation on prey populations?
Decreases species diversity
What does the biomass pyramid represent?
Total organic matter present at different trophic levels
Which process is responsible for converting nitrogen into various forms in the nitrogen cycle?
Nitrogen fixation by nitrogen-fixing bacteria
What provides the energy for the water cycle?
Solar radiation
Which biogeochemical cycle describes the transformation and translocation of phosphorus?
Phosphorus cycle
What is the main focus of ecological succession?
Changes in an ecological community over time
In a competition interaction between organisms, what is usually involved?
Attempts to use ecological resources at the same time and place
What is the main role of a biogeochemical cycle?
Recycle the elements on Earth
How does ecological succession influence ecosystems?
Initiates colonization of new areas and recolonization after destruction
What is the significance of gametogenesis?
Production of reproductive cells
Which statement best describes the third law of ecology?
Major man-made changes in natural systems are likely detrimental
How does mass conservation relate to chemical reactions?
Mass remains constant throughout a reaction
What is the outcome of exploiting nature according to 'There Is No Such Thing as A Free Lunch'?
Conversion of resources from useful to useless
Test your knowledge on biomass pyramids, biogeochemical cycles, and the water cycle. Learn about the representation of biomass at different trophic levels, the cycling of materials in the environment, and the continuous circulation of moisture on earth.
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