food relationships among various organisms in an ecosystem
100
What is an omnivore?
an animal that eats both plants and animals
100
According to page 71, question 1, what would happen if the wolves were taken off the food web diagram?
the raccoon population would increase
200
What is a biotic factor?
a living factor in an ecosystem
200
What is a decomposer?
an organism that breaks down dead organisms to be reused by other living organisms
200
What is an herbivore?
an animal that eats plants
200
What is photosynthesis?
the process by which plants make food in their chloroplasts, sunlight, water, and carbon dioxide
200
According to page 71, question 2, which of the answer choices is not involved in the nitrogen cycle?
Choice A, volcanoes
300
What is the carbon cycle?
the process by which the element carbon is moves through the Earth system
300
What is decomposition?
thr process by which
300
What is lake succession?
the process of a lake gradually filling up with sediments
300
What is population?
a group of the same species that come together to live in one area
300
According to page 71, question 3, which answer choice is not required for a plant to begin photosynthesis?
Choice A, sugar
400
What is a carnivore?
an animal that eats other animals
400
What is ecology?
the study of natural environment systems
400
What is the nitrogen cycle?
the process by which the element nitrogen moves through the earth system
400
What is a producer?
a plant; producers use the energy from the sun to make their own food
400
According to page 72, question 4,great horned owls and prairie falcons eat field mice that live on grass seeds. Which answer choice explains the relationship between these species?
Choice D, two predators, an herbivore, and a producer
500
What is a community?
all of the species living in a particular area
500
What is an ecosystem?
all the living and nonliving things in a given region existing and interacting
500
What is old field succession?
the process of a grassland gradually giving way to trees
500
What is respiration?
the chemical process by which an organism gets its energy from food
500
According to page 72, question 5, which answer choice is an example of an abiotic factor affecting a biotic factor?
Choice C, runoff carries nitrogen compounds into a lake, causing algae to grow