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[blank_start]Ecology[blank_end] is the study of the environment and everything in it, both living and non-living
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The [blank_start]biosphere[blank_end] is all the different types of ecosystems found on Earth
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A [blank_start]habitat[blank_end] is the place where something lives. It includes all the things that make it a suitable place to live. For example, food, water, and shelter.
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A [blank_start]niche[blank_end] is each organisms specific role in the environment
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Which of the following affects community structures?
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Abiotic Factors
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Light
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Seasons
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Biotic Factors
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Interactions
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Which of the following are examples of abiotic factors?
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Climate
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Topography
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Soil Type
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Plant Structures
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Human Activity
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Resources
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Which of the following is a example of biotic factors?
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Evolution
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Adaptations
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Diseases
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Climate
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Which of the following are examples of interactions?
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Adaptations
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Climate
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Competition
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Predation
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Soil Type
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Disease
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Human Activity
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Any close relationship between species is called [blank_start]symbiosis[blank_end]
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A symbiotic relationship in which both species benefits is called [blank_start]mutualism[blank_end]
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A symbiotic relationship in which one organism benefits and the other is not affected is called [blank_start]commensalism[blank_end]
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A symbiotic relationship in which one organism benefits but the other is harmed is called [blank_start]parasitism[blank_end]
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The presence of predators usually increases the number of different species that can live in an ecosystem. Predators limit the size of prey population. As a result, there is more food available and less competition between species
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[blank_start]Competitive Exclusion[blank_end] is when any two individuals of the same or different species will have differences that makes one a better competitor than the other, so one is naturally excluded. They cannot coexist indefinitely
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[blank_start]Keystone species[blank_end] are certain species that are critical to the survival and diversity of the community. They dictate community structures by outcompeting other species. If they are removed, another species may dominate and exclude others. This decreases biodiversity
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[blank_start]Primary Succession[blank_end] is a series of events that occur during the colonization of barren land. [blank_start]Secondary Succession[blank_end] is a series of events that occur during the re-colonization of distributed land that already possesses soil.
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Primary Succession
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Secondary Succession
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Lichens and mosses break down rock to produce soil. This is known as
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Grasses and Shrubs
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Small shrubs and trees
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Pioneer Species
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Climax Community
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Opportunistic, fast growing plants colonize and stabilize the soil layer. This is known as
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Climax Community
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Pioneer Species
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Small shrubs and trees
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Grasses and Shrubs
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This outcompetes the grasses for light and nutrients. It is known as
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Small shrubs and trees
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Pioneer Species
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Climax Community
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Grasses and shubs
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Mature trees and shrubs are known as
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Small shrubs and trees
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Climax Community
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Pioneer Species
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Grasses and shrubs
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[blank_start]Populations[blank_end] are all the individuals of a species that live together in one place at one time
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[blank_start]Demography[blank_end] is the statistical study of populations. It is used to predict how the size of a population will change
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is the number of individuals in a population
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influences the growth rate in enviorments
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has an important impact on evolution
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has an important effect on the ability of the population to survive
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A small population is more likely to become extinct
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because of natural selection
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in the case of random events or natural disaster
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due to inbreeding where the population is more genetically alike. Recessive traits are more likely to appear.
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in order to achieve evolution
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with reduced variability it is harder to adapt the changes
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the second major impact in evolution
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the number of individuals in a given area
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if they are too far apart they may only rarely encounter one another resulting in little reproduction
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a cause of natural disasters
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Disease, competition, predators, parasites, food, and crowding are all examples of [blank_start]density-dependent factors[blank_end].
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Volcanic eruptions, temperature, storms, floods, droughts, chemical pesticides, and major habitat disruptions are examples of [blank_start]density-independent[blank_end] factors.
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[blank_start]Dispersion[blank_end] is the way in which individuals are arranged.
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a hypothetical population that has key characteristics of the real population being studied.
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reflects the birth and death rates in society
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illustrates the population in the past
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used by demographers to predict how a population will grow
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[blank_start]Exponential growth curve[blank_end] is the population growth plotted against time. As a population gets larger, it also grows at a faster rate. This is the maximum population growth under ideal circumstances. It includes plenty of room for each member, unlimited resources, and no hindrance.
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This model accounts for the declining resources available to populations as they grow.
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Carrying capacity
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Logistic model
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Exponential growth curve
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Exponential decay curve
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The number of organisms of one species that an environment can support indefinitely
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Carrying Capacity
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Logistic Model
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Exponential decay curve
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Exponential growth curve
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What are 2 ways a population can prosper?
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Depends of exponential growth rate
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Depends on the rate of growth
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Depends on the population density
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Influenced by the carrying capacity
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[blank_start]R-strategists[blank_end] are characterized by exponential growth, which results in temporarily large populations, followed by sudden crashes in population size. R=rate of growth
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[blank_start]K-strategists[blank_end] are characterized by a high degree of specialization. K=carrying capacity.
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An [blank_start]ecosystem[blank_end] is a collection of organisms and their enviorment
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All of Earth's energy comes from the sun
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[blank_start]Photosynthesis[blank_end] is when organisms use the Sun's energy to create energy rich molecules
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What are sugars made up of?
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Carbon
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Phosphorous
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Nitrogen
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Oxygen
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Hydrogen
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Energy is stored in the [blank_start]chemical bonds[blank_end] of the atoms. When the bond is broken, energy is [blank_start]released[blank_end] to fuel life processes
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A [blank_start]producer[blank_end] is an organism that uses an outside energy source like the Sun to make energy-rich molecules
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What does most producers contain? What is it required for?
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Energy ; Chemosynthesis
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Producers; Photosynthesis
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Chlorophyll; Photosynthesis
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Consumers; Chemosynthesis
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Green plants are [blank_start]producers[blank_end].
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Organisms that are found near volcanic vents in the ocean floor that make energy-rich molecules do it through a process called [blank_start]chemosynthesis[blank_end]
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A [blank_start]consumer[blank_end] is an organism that cannot make their own food so they obtain energy by eating other animals. The four types are herbivores, carnivores, omnivores, and decomposers.
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A food chain is a simple model of the feeding relationship in an ecosystem.
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This describes the concentration of toxins at higher trophic levels due to an increase of ingested biomass
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This is the excess algal growth in bodies of water due to nutrient over-enrichment
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This causes damage to the ozone layer; there is a hole that doesn't protect as effectively against solar UV rays
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Human Impact
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Biological Magnification
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Eutrophication
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Air Pollutants
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[blank_start]Acid Rain[blank_end] is when precipitation combines with sulfates in the air released from pollution to make acid rain
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All of the individuals of a species that live together in one place at one time is a [blank_start]population[blank_end].
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The movement of individuals into a population from another area is called [blank_start]immigration[blank_end]
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The movement of individuals out of a population is called [blank_start]emigration[blank_end]
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[blank_start]Intraspecific[blank_end] competition is when members of the same species compete for limited resources, while [blank_start]interspecific[blank_end] competition is when different species compete for limited resources.
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Intraspecific
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interspecific