Species at Risk and Extinction

What is the primary consequence of two species occupying the same ecological niche in the same place at the same time?

Which type of symbiotic relationship involves one organism benefiting while the other is not affected?

What is the term for the process by which a species evolves to occupy a slightly different niche in order to coexist with another species?

What is the term for the interaction between two organisms where one hunts and the other is attacked?

What is the term for the unique role that a species plays in its ecosystem, which has a disproportionate impact on the environment and other species?

What is the primary reason for the sudden extinction of a species in a habitat?

What is a characteristic of mutualism in many cases?

What is the result of coevolution between grazing animals and grass species?

What is the term for the complex interrelationships between a community and the physical environment?

What is a key characteristic of a keystone species?

Which type of consumer eats both plants and animals?

What is the primary benefit of predation for the predator?

What is the term for the step in the flow of energy through an ecosystem?

What is the result of a species' gradual loss of competition for food?

What is the term for the assemblage of all interacting species of organisms in an area?

What is the primary reason for the excess number of individuals in a species, resulting in a shortage of specific resources?

What is the outcome of a species dividing into two isolated subpopulations?

What is the estimated percentage of species that have gone extinct on Earth?

What is the term for the concept that two or more species can reciprocally influence the evolutionary direction of the other?

What is the result of natural selection acting on a species over time?

What is the primary role of a keystone species in an ecosystem?

What is the term for the total of all the ways an organism affects its environment and interacts with other organisms?

What is the difference between a population and a species?

What is the process that determines which individuals within a species will reproduce and pass their genes to the next generation?

What is the term for the specific role and position that an organism occupies within its environment?

What percentage of energy is lost as heat when moving from one trophic level to the next?

What is used as a proxy to measure energy contained in each trophic level?

What is the term for a series of organisms occupying different trophic levels through which energy passes?

What is the primary function of an organism's habitat?

What is a characteristic of a food web?

What is the characteristic of an organism that has a narrow range of tolerance?

What is the byproduct of photosynthesis in plants?

What is the process by which decomposers recycle naturally occurring organic molecules?

What is the term for the nonliving things that influence an organism?

What is the functional role of an organism in its surroundings?

What is the final stage of the carbon cycle in which CO2 and water are released back into the atmosphere?

What is the primary factor that restricts species success?

What is the term for the cycling of molecules and atoms between living and non-living portions of an ecosystem?

What is the primary mechanism by which energy is transferred from one trophic level to the next?

What is the term for the series of processes by which carbon is exchanged between the atmosphere and living organisms?