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Definitions
Definitions
Definitions
Definitions
Definitions/Questions
100
Abiotic Factor
A non-living factor in an ecosystem: light, water, and so on are important abiotic factors.
100
Consumer
A living organism that eats other living things for its food needs.
100
Food web
The food relationships among various organisms in an ecosystem
100
Omnivore
An animal that eats both plants and animals
100
Which of the following would most likely happen if the wolves were to disappear from this food web? A.The grass population would increase B.The raccoon population would increase C.The grasshopper population would die off D.The shrub population would die off
B.The raccoon population would increase.
200
Biotic Factor
A factor in an ecosystem that is living; plants and animals are biotic factors
200
decomposer
A living organism that breaks down dead organisms into smaller parts that can be reused by other living organisms
200
Herbivore
An animal that eats plants.
200
Photosynthesis
The process by which plants make food in their chloroplasts from sunlight, water, and carbon dioxide
200
Which of the following is not involved in the nitrogen cycle? A. Volcanoes B. Bacteria C. Legumes D. Plants
A. Volcanoes
300
Carbon Cycle
the process by which the element carbon moves through the Earth System.
300
Decomposition
the process by which dead organisms into smaller parts that can be reused by other living organisms.
300
Lake succession
The process of a lake gradually filling up with sediment.
300
Population
A group if the same species that come together to live in one area
300
Which of the following is not required for a plant to begin photosynthesis? A. Sugar B. Carbon dioxide C. Sunlight D. Water
A. Sugar
400
Carnivore
An animal that eats other animals
400
Ecology
The study of natural environment systems
400
Nitrogen Cycle
The process by which the element nitrogen moves through the Earth System.
400
Producer
A plant; producers use the energy from the Sun to make their own food
400
Great horned owls and prairie falcons eat field mice that live on grass seeds. Which of the following explains the relationship between these species? A. There are three predators and a consumer B.There are three predators and a producer C.Mice and grasses are producers for the two predators D.There are two predators, one herbivore, and one producer.
D.There are two predators, one herbivore, and one producer
500
Community
All of the species living in a particular area.
500
Ecosystem
All of the living and non-living things in a given region existing and interacting.
500
Old-field Succession
The process of a grassland gradually giving way to trees.
500
Respiration
The chemical process by which an organism gets its energy from food
500
Which of the following is an example of an abiotic factor affecting a biotic factor? A.Bacteria decompose leaf litter in a stream, releasing carbon dioxide B.Volcanic eruptions spew ash and dust into the atmosphere C. Runoff carries nitrogen compounds into a lake, causing algae to grow. D. Aquatic grasses provide energy and nutrients to a muskrat.
C. Runoff carries nitrogen compounds into a lake, causing algae to grow.