ECOSYSTEMS AND BIODIVERSITY Flashcards

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1
Q

WHAT IS A HABITAT

A

THE PLACE WHERE AN ORGANISM LIVES

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2
Q

WHAT IS A POPULATION

A

ALL THE ORGANISMS OF ONE SPECIES IN A HABITAT

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3
Q

WHAT IS A COMMUNITY

A

ALL THE DIFFERENT SPECIES IN A HABITAT

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4
Q

WHAT IS AN ECOSYSTEM

A

ALL THE ORGANISMS LIVING IN A PARTICULAR AREA AND ALL THE NON-LIVING CONDITIONS

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5
Q

BIODIVERSITY IS ALL ABOUT THE (…)

A

VARIETY OF LIFE IN AN AREA

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6
Q

FANCY DEFINITION OF BIODIVERSITY

A

BIODIVERSITY IS THE VARIETY OF DIFFERENT SPECIES OF ORGANISMS ON EARTH, OR WITHIN AN ECOSYSTEM

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7
Q

WHAT IS HIGH BIODIVERSITY AND WHY IS IT IMPORTANT

A

IT MAKES SURE THAT ECOSYSTEMS ARE STABLE BECAUSE DIFFERENT SPECIES DEPEND ON EACH OTHER FOR THINGS LIKE SHELTER AND FOOD, AND DIFFERENT SPECIES CAN ALSO HELP TO MAINTAIN THE RIGHT PHYSICAL ENVIRONMENT FOR EACH OTHER

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8
Q

ENVIRONMENTAL CHANGES AFFECT (…)

A

COMMUNITIES IN DIFFERENT WAYS

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9
Q

WHAT DOES ABIOTIC MEAN

A

NON-LIVING

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10
Q

WHAT DOES BIOTIC MEANS

A

LIVING

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11
Q

THE ENVIRONMENT IN WHICH PLANTS AND ANIMALS LIVE CHANGES ALL THE TIME, THIS CHANGES ARE CUAUSED BY (…)

A

ABIOTIC (NON-LIVING) AND BIOTIC (LIVING) FACTORS AND AFFECT COMMUNITIES IN DIFFERENT WAYS

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12
Q

WHAT ARE THE DIFFERENT THINGS THAT CAN HAPPEN WHEN ENVIRONMENTAL CHANGES AFFECT COMMUNITIES

A

FOR SOME SPECIES POPULATION SIZE MAY INCREASE, FOR OTHERS IT MAY DECREASE, OR THE DISTRIBUTION OF POPULATIONS MAY CHANGE

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13
Q

WHAT ARE THE ABIOTIC FACTORS THAT AFFECT COMMUNITIES

A

1) ENVIRONMENTAL CONDITIONS- EG: THE DISTRIBUTION OF BIRD SPECIES IN GERMANY APPEARS TO BE CHANGING BECAUSE OF A RISE IN AVERAGE TEMPERATURE (LIGHT INTENSITY, MOISTURE LEVEL AND SOIL PH) ALSO AFFECT THE ABUNDANCE AND DISTRIBUTION OF ORGANISMS
2) TOXIC CHEMICALS- EG CHEMICAL PESTICIDES OR FERTILISERS, PESTICIDES CAN BUILD UP IN FOOD CHAINS THROUGH BIOACCUMULATIONSO ORGANISMS AT THE TOP OF THE CHAIN RECEIVE A TOXIC DOSE

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14
Q

WHAT ARE BIOTIC FACTORS THAT AFFECT COMMUNITIES

A

1) AVAILABILITY OF FOOD- EG: IN A BUMPER YEAR FOR BERRIES, THE POPULATION OF BLACKBIRDS MIGHT INCREASE BECAUSE THERE WILL BE ENOUGH FOOD FOR ALL OF THEM SO THEY ARE MORE LIKE TO REPRODUCE AND SURVIVE.
2) NUMBER OF PREDATORS- EG: IF THE NUMBER OF LIONS (PREDATOR) DECREASES THEN THE NUMBER OF GAZELLES (PREY) MIGHT INCREASE BECAUSE FEWER OF THEM WILL BE EATEN BY LIONS
3) COMPETITION- ORGANISMS COMPETE WITH OTHER SPECIES FOR THE SAME RESOURCES, EG: PLANTS NEED THINGS LIKE LIGHT, SPACE, WATER AND MINERALS FROM THE SOIL AND ANIMALS COMPETE FOR THINGS LIKE TERRITORY, SHELTER, FOOD, WATER AND MATES

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