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128 Cards in this Set
- Front
- Back
How do decomposers decompose?
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They break down large molecules and absorb the resulting small molecules |
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How can fungi be useful?
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Food Source Leavens bread |
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How can fungi be harmful? |
Fungal disease |
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What is the mycelium? |
The supporting structure that digests food underground |
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What are spores?
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Specialized cells on the underside of the mushroom cap produce spores that contain haploid cells |
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Describe a shoot system |
Photosynthetic structures exposed to light and air aboveground |
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Describe a root system
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Belowground anchorage structures exposed to water and minerals in soil |
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Describe pollen |
protects sperm allowing them to be carried by wind or animals |
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Describe egg |
remains in female reproductive organ, allowing the embryo to develop within the mother's plant's body |
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Describe vascular system
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network of tubes that transports water, sugar, and minerals |
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Describe cuticle |
waxy coating that prevents water loss |
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describe leaves |
main site of photosynthesis and gas exchange through pores |
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describe lignin |
chemical in cell walls that increases support |
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The symbiotic association formed by fungi and plant roots
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mycorrhizae |
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How does the fungi benefit from the plant?
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Gains some sugar from the plants |
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How does the plant benefit from the fungi? |
Gains some mineral nutrients such as phosphorus |
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name the tissue systems in plants |
phloem |
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Transports water and dissolved minerals from the roots to the shoots |
xylem |
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transports sugars from where they are made or stored to other parts of the plant |
phloem |
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What did the evolution of a waxy outer layer reduce? |
water loss |
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What allowed plants to grow taller? |
The evolution of vascular tissue and cell walls |
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What freed gymnosperms from the need to reproduce near water? |
Seeds |
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What opened up new habitats? |
The evolution of seeds |
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What allowed angiosperms to dominate the land? |
The evolution of flowers |
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What adaptations to bryophytes have? |
A waxy outer layer that helps to retain moisture structures that provide internal protection for gametes |
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What is an example of a bryophyte? |
moss |
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What is phloem? |
contains living cells that trans |
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what is zylem? |
made of dead cells acting as tiny pipes |
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Define transpiration |
xylem sap is moved through the plant body via transpiration |
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What adaptations to seedless vascular plants Have?
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Lignin |
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What is lignin? |
hardened cells walls |
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example of a seedless vascular plant |
fern |
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what adaptations to gymnoshperms have? |
seeds |
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example of a gymnosperm |
redwood |
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what adaptation do angiosperms have?
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flowering plants |
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name an example of an angiosperms
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beans |
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How are growth rings useful?
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Which years were good or bad. tells story of tree |
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another name for consumers |
heterotrophs |
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another name for producers |
autotrophs |
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describe heterotrophs |
obtain food from their environment |
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define autotrophs |
make their own food |
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what has asymmetrical shape? |
sponges |
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what lacks tissues? |
sponges |
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Sessile (staying in one place) |
sponges |
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bilateral symmetry |
cnidarians |
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cells organized into tissues |
cnidarians |
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stinging cells |
cnidarians |
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two distinct body forms |
cnidarians |
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example of cnidarian |
sea anemone |
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bilateral symmetry
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mollusks |
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visceral mass |
mollusks |
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circulatory system |
mollusks |
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shell, mantle, and foot |
mollusks |
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radula |
mollusks |
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larval bilateral symmetry
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echnoderms |
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spiny surface
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echnioderms |
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water vascular system and tube feet
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echinoderms |
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endoskeleton |
echinoderms |
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mouth
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echinoderms |
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all chordates are recognized by these features: |
tail notochord pharyngeal slits |
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vertebrates have what that includes a backbone and a skull? |
endoskeleton |
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examples of invertebrates |
tanicates (filter sea water) |
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examples of jaw-less fishes
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lampreys |
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fish with jaws |
bonxfish (internal skeleton) |
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All terrestrial vertebrates are what?
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tetrapods |
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Who were the first tetrapods? |
amphibians
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second tetrapods
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evolution of reptiles |
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aquatic adaptations of amphibians |
gills and fins |
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terrestrial adaptations of amphibians |
musculoskeletal moist skin |
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two major adaptations for land for reptiles
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reptiles also have waterproff skin |
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define ectotherm
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must obtain heat form the environment |
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define endotherm |
metabolism maintains a warm constant body temp |
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groups of mammals |
marsupials eutherian |
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define monotremes |
only surviving egg-laying mammals |
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define marsupials
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mature in pouches |
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define eutherian |
born fully developed after maturing with a placenta |
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primate characteristics |
binocular vision limber joints, limbs, and digits complex behaviors extended parental care |
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name of the human evolutionary branch
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hominin |
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define organismal |
focuses on the ways that organisms to their environments through physiology and behavior |
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define population
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concerned with factors that affect population size, growth, and density |
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define community |
focus on interactions among species |
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define ecosystem |
concerned with questions of energy flow and chemical cycling |
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define biosphere |
study of the influence of energy and matter on organisms across the bioshpere |
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list six abiotic factors
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inorganic nutrients wind water availability temp fire |
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define abiotic
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nonliving components |
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define biomass
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total amount of living material in ecosystem |
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define primary production
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measure of the rate at which solar energy is converted to biomass |
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list two biogeochemical biomes
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nitrogen cycle |
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describe freshwater biome
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generally have salt concentrations less than 1% |
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describe marine biome
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3% salt |
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intermediate aquatic
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where land and freshwater meet the ocean |
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polar ice
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northernmost and southernmost parts of Earth |
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tundra
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dryness, bitter cold temps, high winds, permafrost |
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coniferous
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dominated by cone-bearing evergreens |
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temperate broadleaf
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hot summers, cold winters, relatively frequent rain |
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tropical forests
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wet, warm climates near equator |
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temperate grasslands
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cold winters, low rainfall, periodic drought |
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chaparral
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coastal areas where ocean currents produce mild, rainy winter and hot, dry summers |
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savannas
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warm, dry, grasses and scattered trees |
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deserts |
low rain fall, cold at night, hot during day |
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What is the competitive exclusion principle?
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if resources required by two species are too similar, cannot coexist |
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mutualism |
form of interspecies interaction in which both species benefit |
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predation
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an interaction in which a predator species kills and eats a prey species |
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herbivory |
eating of plant parts by an animal |
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what is biological magnification? |
tendency of toxins to become concentrated as they pass through a food chain |
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species richness |
same number of species |
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species abundance |
fraction of total life in community accounted for by each species |
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trophic structure |
tertiary consumers secondary consumers primary consumers producers |
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trophic structure example
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snake mouse grasshopper plant |
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define keystone species |
one species have a disproportionate effect on overall species diversity |
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what is the difference between primary and secondary succession? |
primary occurs when an area has been rendered virtually lifeless with no soil. secondary occurs after disturbance that kills much of life in an area but leaves soil intact |
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define invasive species |
when non-native organisms are introduced to a community, they can spread rapidly |
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example of invasive species
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lionfish |
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describe integrated pest management |
method that utilizes several strategies |
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causes of biodiversity loss |
invasive species overharvesting pollution global climate change |
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three different patterns of population
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uniform random |
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What is carrying capacity?
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maximum population size that can survive in an environment |
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examples of density-dependent factors affecting population growth
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limiting factors whose influence is affected by population density |
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examples of density independent factors affecting population growth
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unrelated population density |
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list human impacts on the environment |
freshwater shortages declining species |
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what is meant by biological hot spot? |
relatively small areas with unusually high concentrations of |
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what is fragmentation?
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splitting of habitats that causes populations to become isolate from each other |
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what does bioremediation aim to do?
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use of living organisms to detoxify polluted ecosystems |
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4 greenhouse gases
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methane nitrous oxide water vapor |
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describe the greenhouse effect
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vital to life on earth without it, most of earth's surface would be too cold to support life |
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examples of physiological respones
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goose bumps, increasing red blood cells |
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examples of anatomical responses |
seasonal heavy coats/shedding |
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