vocab Flashcards

(36 cards)

1
Q

abiotic factor , what is it ?

A

Physical, or nonliving, factor that shapes an ecosystem.

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2
Q

atmosphere. what is it ?

A

Relatively thin layer of gases that from in earth’s outermost layer

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3
Q

hydrosphere , what is it ?

A

potion of earth, that consists water, in any of its forms. including oceans, glaciers, rivers, lakes, groundwater, and water vapor.

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4
Q

geosphere, what is it ?

A

the densest part of earth, which includes the crust, mantle and core.Includes rocks, continents , and the ocean floor too.

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5
Q

ecosystem

A

all the organisms that live in a place, together with their nonliving environment

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6
Q

biosphere

A

part of earth in which life exists including land, water, and air or atmosphere

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7
Q

ecology

A

scientific study of interactions among organisms and between organisms and their environment.

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8
Q

biome

A

a group of ecosystems that share similiar climates and typical organisms

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9
Q

population density

A

number of individuals per unit area

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10
Q

population distribution

A

how individuals are spaced out across their range

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11
Q

age structure

A

the number of males and females of each age in population

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12
Q

what factors affect population growth .?

A

Birth date, Death rate, and the rate at which individuals enter or leave a population all affect population growth

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13
Q

how do ecologists study about populations?

A

Ecologists study populations by examining their geographic range, growth rate, density, and distribution, and age structure.

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14
Q

Exponential growth cause

A

A species is introduced into a new region with plentiful resources and few predators

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15
Q

Exponential growth effect

A

Birth rates are high , death rates are low, the population increases steeply.

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16
Q

logistic growth, phase 1 cause and effect

A

Cause : Species is introduced into a new region with plentiful resources and few predators,
Effect: Population decreases

17
Q

exponential growth, bad or good

A

A species is introduced into a new region with plentiful resources and few predators, GOOD!!!!! BIRTH RATES ARE HIGH, DEATH RATES ARE LOWER, AND POPULATION INCREASES !

18
Q

logistic growth, good or bad ???

A

Bad, capacity is reached, resources become limited, population deceases

19
Q

IMMIGRATION .

A

IMPORT, IN , PEOPLE MOVE IN

20
Q

EMIGRATION

A

OUT, PEOPLE EXITING

21
Q

EXPONENTIAL GROWTH?

A

GROWTH PATTERN IN WHICH THE INDIVIDUALS IN A POPULATION REPRODUCE/ GROW AT AN INCREASING RATE

22
Q

THE LOGISTIC GROWTH CURVE

A

SHAPED LIKE A S- SHAPED CURVE WHEN OCCURS A POPULATIONS GROWTH SLOWS AND THEN STOPS, FOLLOWING A PERIOD OF TIME OF EXPONENTIAL GROWTH.

23
Q

CARRYING CAPACITY?

A

MAX NUMBER OF INDIVIDUALS OF A PARTICULAR SPECIES THAT A PARTICULAR ENVIRONMENT CAN SUPPORT

24
Q

LIMITING FACTOR ?????

A

FACTOR THAT CAUSES POPULATION GROWTH TO DECREASE

25
DENSITY DEPENDENT LIMITING FACTOR
LIMITING FACTOR THAT DEPENDS ON POPULATION DENSITY, INCLUDING COMPETITION, STRESS FROM OVERCROWDING , PARASITISM, DISEASE, PREDATION, AND HERBIVORY.
26
DENSITY DEPENDENT LIMITING FACTOR COMPETITON
WHEN POPULATION DENSITY IS HIGH, INDIVIDUALS COMPETE FOR FOOD, WTAER, SPACE, SUNLIGHT, AND OTHER RESOURCES THAT MAY BE LIMITED.
27
DENSITY DEPENDENT LIMITING FACTOR PARASITISM AND DISEASE
PARASITES AND DISEASES- CAUSING ORGANISMS WEAKEN THEIR HOSTS AND CAN CAUSE DEATH.
28
LIMITING FACTOR
ANY FACTOR THAT CONTROLS THE GROWTH OF A POPULATION. DECREASE
29
DENSITY, INDEPENDENT LIMITING FACTORS , ARE ???
ENVIROMENTAL EXTREMES INCLUDING WEATHER SUCH AS HURRICANES, DROUGHTS, OR FLOODS, AND NATURAL DISASTERS SUCH AS WILDFIRES, ENVIROMENTAL ISSUES/ CLIMATE
30
RELATIONSHIP BETWEEN LIMITING FACTORS AND EXTINICTION
IF CARRYING CAPACITY FALLS LOW ENOUGH, POPULATIONS CAN BE WIPED OUT, LEADING TO SPECIES EXTINICTION. AN EXTINCT SPECIES HAS NO MEMBERS REMAINING LIVING
31
HUMAN POPULATION SIZE CHNAGE OVERTIME
HUMAN POPULATIONS , LIKE OTHER POPULATIONS TEND TO INCREASE, AND THE RATE OF THOSE INCREASES HAS CHANGED OVER TIME
32
WHAT FACTORS MEASURED TO DETERMINE IF A DEMOGRAPGHIC CHANGE IS OCCURING ?
BIRTH DATES, DEATH RATES, AGE STRUCTURE
33
DEMOGRAPHY
SCIENTIFIC STUDY OF HUMAN POPULATIONS
34
DEMOGRAPHIC TRANSITION
CHNAGE IN A POPULATION FROM HIGH BIRTH AND DEATH RATE TO LOW BIRTH AND DEATH RATES
35
POPULATION GROWTH RATES DIFFER AMOUG COUNTRIES ???
BIRTH RATES, DEATH RATES, AGE STRUCTURE HELP PREDICT WHY SOME COUNTRIES HAVE HIGH GROWTH RATES WHILE OTHER COUNTRIES POPULATIONS INCREASE MORE SLOWLY.
36
what is a biotic factor ??
Any living part of the environment with which an organism might interact