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Chapter 21
Question | Answer |
---|---|
ecology | the study of organisms in their habitats |
ecosystem | the limited area in which living and nonliving things interact |
abiotic environment | all the nonliving factors in an ecosystem |
biotic community | all the living organisms in an ecosystem |
habitat | |
niche | what an organism does |
artificial ecosystem | manmade ecosystem |
humus | made of decaying plant and animals materials |
water cycle | the continuous movement of water from the atmosphere the earth and back to the atmosphere |
evaporation | the movement of water from the earth to the atmosphere |
ecology | the study of organisms in their habitats |
ecosystem | the limited area in which living and nonliving things interact |
abiotic environment | all the nonliving factors in an ecosystem |
biotic community | all the living organisms in an ecosystem |
habitat | |
niche | what an organism does |
artificial ecosystem | manmade ecosystem |
humus | made of decaying plant and animals materials |
water cycle | the continuous movement of water from the atmosphere the earth and back to the atmosphere |
evaporation | the movement of water from the earth to the atmosphere |
precipitation | the atmospheric water that falls back to earth |
water table | as the groundwater collects in the earth, it forms a reservoir |
population | all the individuals from the same species in am an ecosystem |
producers organism | manufactures their own food |
consumer organism | cannot manufacture their own food |
oxygen cycles | shows one way in which the physical environment and different populations of the biotic community work together in an ecosystem |
nitrogen cycle | designed processes for converting some of that nitrogen into usable compounds |
rhythms | the changes that happen on a regular basis in an ecosystem |
circadian rhythm | the changes in the meadow that were described in the opening paragraphs of this section are part of |
nocturnal | the species were entering a period of rest while the diurnal |
diurnal | species were entering a period of activity |
seasonal rhythm | the change in the ecosystem that occur with the change of season |
dormant buds | during the autumn the growing tips of these woody plants to form ______ |
hibernation | the dormant state which permits certain animals to survive the winter |