Ecology Quiz Challenge Test your knowledge on the interactions between organisms and their environment with this ecology quiz! remus2009 published on September 19 Stacked 1/12 Which term refers to the combined biotic and abiotic factors in an environment? Ecosystem Food Chain Adaptation Biodiversity 2/12 What is the primary source of energy in most ecosystems? Sunlight Water Soil Air 3/12 What do we call an organism that can produce its own food through photosynthesis? Autotroph Heterotroph Carnivore Decomposer 4/12 Which of the following is NOT a major biome on Earth? Polar Region Desert Tundra Rainforest 5/12 What is the process by which carbon is cycled between living organisms and the environment? Carbon cycle Nitrogen fixation Photosynthesis Decomposition 6/12 Which of the following is an example of a keystone species? Sea Otter Squirrel Rabbit Hummingbird 7/12 What is the relationship between a bee and a flower an example of? Mutualism Parasitism Commensalism Predation 8/12 Which of the following is an abiotic factor? Temperature Predator Herbivore Decomposer 9/12 What is the term for the variety of different species in an ecosystem? Biodiversity Habitat Niche Population 10/12 Which of the following is NOT a human impact on the environment? Conservation Deforestation Pollution Climate Change 11/12 What is the process of one community gradually changing into another over time? Succession Predation Competition Symbiosis 12/12 Which of the following is an example of a decomposer? Fungus Wolf Deer Eagle