An environment that provides the things an organism neds to live, grow, and reproduce.
What is a habitat?
100
These organisms produce energy through the use of photosynthsis.
What are Plants?
100
An ecologist observes a herd of elephants and counts 26 of them. Which method of counting populations did he use?
What is a direct observation?
100
These types of energy sources cannot be replaced. They are called what?
What is non-renewable?
100
The organism that a parasite lives in or on in a parasitism interaction.
What is a host?
200
The community of organisms that lives in a particular area, along with their nonliving surroundings. This includes abiotic and biotic factors.
What is an ecosystem?
200
These organisms are herbivores, therefore they are called ______________ consumers.
What is first-level?
200
A prairie ecosystem measures 6 miles by 12 miles. In one square mile an ecologist counts 18 prairie dogs. How many prairie dogs are estimated to be in the entire ecosystem?
What is the 1,296?
200
Another term for non-renewable resources that tells you they came from the remains of living things.
What is fossil fuel?
200
An organism that is killed and eaten by another organism.
What is prey?
300
A relationship between two species in which one species benefits and the other is neither helped nor harmed.
What is commensalism?
300
These organisms are typically at the top of the food chain. They are called ____________ consumers.
What is top-level?
300
Cliff swallows are birds that make mud nests on steep cliffs. What is the best method to estimate their population?
What is indirect observation?
300
Oil is another name for this fossil fuel.
What is petroleum?
300
A carnivore that feeds on the bodies of dead organisms.
What is a scavenger?
400
An organism that breaks down wases and dead organisms.
What is a decomposer?
400
This is a way to show how energy in a food web is allocated. Usually there is a large base and a pointed top.
What is an energy pyramid?
400
Observing turtles in a lake, an ecologist uses this method to count the population.
What is mark and recapture?
400
This type of renewable energy uses photovoltaic cells to store energy.
What is solar energy?
400
An interaction in which one organism kills another for food.
What is predation?
500
A series of events in which one organism eats another and obtains energy.
What is a food chain?
500
What is the percentage of energy LOST as it moves from producer to primary consumer to secondary consumer?
What is 90%?
500
A forest service worker is trying to estimate the number of bark beetle trees in a square mile of forest. What is the best method to use?
What is sampling?
500
The combining of two atomic nuclei to produce energy is called what?
What is nuclear fusion?
500
A group of organiss that are physically similar and can mate wit each other and produce offspring that can also mate and reproduce.