a nonliving factor in an ecosystem; light, water, and so on are important abiotic factors
What is abiotic factors
100
a living organism that gets its energy and nutrients from other animals
What is consumer
100
the food relationships among various organisms in an ecosystem
What is food web
100
animal that eats both plants and other animals
What is omnivore
100
what would happen if the wolves were removed from this food web? (page 71)
What is the raccoon population would increase
200
a factor in an ecosystem that is living; plants and animals are biotic
What is biotic factor
200
a living organism that breaks down dead organisms into smaller parts that can be reused by other living organisms
What is decomposer
200
an animal that eats only plants
What is herbivore
200
process of plants and other photosynthetic organisms making their food
What is photosynthesis
200
which of the following is not included in the nitrogen cycle?
~volcanoes
~bacteria
~legumes
~plants
What is volcanoes
300
the process by which the element carbon moves through the Earths system
What is carbon cycle
300
the process by which dead organisms break down into smaller parts that can be reused by other living organisms
What is decomposition
300
a lake gradually fills up with sediment, the pattern is lake, bog, marsh, and meadow
What is lake succession
300
a group of the same species that come together to live in one area
What is population
300
which of the following is not required for a plant to begin photosynthesis?
~sugar
~carbon dioxide
~sunlight
~water
What is sugar
400
an animal that eats other animals
What is carnivore
400
the study of natural environment ecosystems
What is ecology
400
special bacteria living underground take atmospheric nitrogen and put it into nitrogen compounds
What is nitrogen cycle
400
a plant; producers use energy from the Sun to make heir own food
What is producer
400
which of the following orders the organisms from producer to highest-level consumer?
~grass-mouse-hawk-human
~mouse-human-grass-hawk
~hawk-human-mouse-grass
~grass-hawk-human-mouse
What is grass-mouse-hawk-human
500
all of the species living in a particular area
What is community
500
all of the living and nonliving things in a given region existing and interacting
What is ecosystem
500
the process of a grassland gradually giving way to trees
What is old-field succession
500
when an animal eats the plant, the energy is released through other chemical reactions. oxygen is taken in, then carbon dioxide, water, and energy is released
What is respiration
500
what is an example of an abiotic factor affecting a biotic factor?
What is bacteria decompose leaf litter in a stream, releasing carbon dioxide