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AP Biology Unit 8 Ecology | Questions And Answers Latest {} A+ Graded | 100% Verified
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AP Biology Unit 8 Ecology | Questions And Answers Latest {2024- 2025} A+ Graded |100% Verified
climate - The long-term prevailing weather conditions at a given place.
abiotic - Nonliving; referring to the physical and chemical properties of an environment.
biotic - Pertaining to the living factors—the organisms—in an environment.
biomes - Any of the world's major ecosystem types, often classified by temperature and precipitation
disturbance - A natural or human-caused event that changes a biological community and usually
removes organisms from it. Disturbances, such as fires and storms, play a pivotal role in structuring
many communities.
thermocline - A narrow stratum of abrupt temperature change in the ocean and in many temperate-
zone lakes.
dispersal - The movement of individuals or gametes away from their parent location. This movement
sometimes expands the geographic range of a population or species.
tropical forest - A terrestrial biome characterized by relatively high precipitation and temperatures year-
round.
savanna - A tropical grassland biome with scattered individual trees and large herbivores and
maintained by occasional fires and drought.
desert - A terrestrial biome characterized by very low precipitation.
chaparral - A biome characterized by mild, rainy winters and long, hot, dry summers; dominated by
dense, spiny evergreen shrubs
, temperate grassland - A terrestrial biome that exists at midlatitude regions and is dominated by grasses
and forbs.
temperate broadleaf forest - A biome located throughout midlatitude regions where there is sufficient
moisture to support the growth of large, broadleaf deciduous trees.
northern coniferous forest - A terrestrial biome characterized by long, cold winters and dominated by
cone-bearing trees.
tundra - A terrestrial biome at the extreme limits of plant growth. At the northernmost limits, it is called
arctic tundra, and at high altitudes, where plant forms are limited to low shrubby or matlike vegetation,
it is called alpine tundra.
density - The number of individuals per unit area or volume.
survivorship curves - A plot of the number of members of a cohort that are still alive at each age; one
way to represent age-specific mortality.
exponential growth - Growth of a population in an ideal, unlimited environment, represented by a J-
shaped curve when population size is plotted over time.
logistic growth - Population growth that levels off as population size approaches carrying capacity.
carrying capacity - The maximum population size that can be supported by the available resources,
symbolized as K.
density dependent - Referring to any characteristic that varies with population density.
density independent - Referring to any characteristic that is not affected by population density.
K-selection - Selection for life history traits that are sensitive to population density; also called density-
dependent selection.
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