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Biology Grade 9 > Ecosystems > Flashcards

Ecosystems Flashcards

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1
Q

Define the following terms: habitat, aquatic ecosystem, terrestrial ecosystem, species, ecosystem.

A

Habitat- home of an animal
aquatic ecosystem - ecosystem that is found in water
terrestrial - found on land
species - type of organism
ecosystem - interaction between biotic and abiotic factors in a comunity

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2
Q

What are the 4 spheres of the Earth?

A

lithosphere biosphere atmosphere hydrosphere

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3
Q

What is the different between a population and a community?

A

population- one species

community multiple spicies

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4
Q

What is the difference between the terms biotic and abiotic?

A

biotic=living

abiotic=non-living

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5
Q

Define the term sustainability

A

ability to maintain balance in an ecosystem

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6
Q

What percentage of the Sun’s energy is absorbed by the Earth

A

70%

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7
Q

What is the difference between the terms producers and consumers

A

produce their own food

consumers eat other things

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8
Q

What are the word equations for photosynthesis and cellular respiration

A

photosynthesis
CO2 + water - light energy - oxygen + sugars
cellullar respiration
oxygen + sugar = CO2 + water + energy

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9
Q

What is the difference between a food chain and a food web

A

chain - limited organisms found

web - made of many food webs

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10
Q

. What is the difference between the terms autotrophs and heterotrophs

A

autotrophs self feeders heterotrophs other feeders

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11
Q

What is another name for a feeding level

A

trophic

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12
Q

As energy is transferred between trophic levels, how much energy is available to be transferred

A

10%

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13
Q

biomes in canada

A

tundra, decidus, grassland, boreal, mountain,

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14
Q

Define the following terms: biomass, niche,

A

refers to weight biomass

niche role of organism in ecosyste

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15
Q

. What are some abiotic factors that influence species found in aquatic ecosystems

A

temperature, salt consentration

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16
Q

Give some examples of natural resource industries

A

forestry, loging, refineries

17
Q

Define the terms equilibrium

A

equilibirum - balance

18
Q

Define the terms biodiversity, species richness, and habitat loss

A

biodiversity - the variety of life in the world or in a particular habitat or ecosystem

19
Q

Define the term fragmentation

A

dividing things into smaller pieces

20
Q

Define the term non-native species

A

spicies that are not found in area

21
Q

What are the 3 different ways forests can be harvested

A

clear cutting shelter wood cutting selective cutin

22
Q

Define the term pollution

A

releasing harmful toxins into tharth

23
Q

Define the term acid precipitation

A

rain that has a higher acid concentration

24
Q

What are 4 methods we can use to clean up oil spills

A

burning, dispersal, vacuming,

25
Q

Why are plastics very harmful to some organisms

A

think it is food

26
Q

What is an engineered ecosystem

A

built/man-made

27
Q

What are monocultures

A

gorwing one type of crop in large quantities

28
Q

Define the term pests. Who determines what is a pest?

A

pest - unwanted organism

humans determine pests

29
Q

What are pesticides

A

harmful toxins that harm the unwanted organism

30
Q

What is the difference between broad-spectrum and narrow spectrum pesticides

A

broad - affects alot

narrow - affect few

31
Q

Define the terms bioaccumulation and bioamplification

A

bioaccumulation - ejaculation of substances such as pesticides found in an organism
bioamplification - increase in consentration as you move up the food chain

32
Q

Define the term organic farming

A

use natural fertilizers and pesticies

33
Q

What are some of the ways the government, organizations, and communities support us

A

public transit, reusable energy,

34
Q

What are some differences between a natural and urban ecosystem

A

natural - not man made

urban - refers to city

Biology Grade 9 (1 decks)

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