Ecosystems

Question 1

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

Answer 1

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

Question 2

What are the 4 spheres of the Earth?

Answer 2

lithosphere biosphere atmosphere hydrosphere

Question 3

What is the different between a population and a community?

Answer 3

population- one species

community multiple spicies

Question 4

What is the difference between the terms biotic and abiotic?

Answer 4

biotic=living

abiotic=non-living

Question 5

Define the term sustainability

Answer 5

ability to maintain balance in an ecosystem

Question 6

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

Answer 6

70%

Question 7

What is the difference between the terms producers and consumers

Answer 7

produce their own food

consumers eat other things

Question 8

What are the word equations for photosynthesis and cellular respiration

Answer 8

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

Question 9

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

Answer 9

chain - limited organisms found

web - made of many food webs

Question 10

. What is the difference between the terms autotrophs and heterotrophs

Answer 10

autotrophs self feeders heterotrophs other feeders

Question 11

What is another name for a feeding level

Answer 11

trophic

Question 12

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

Answer 12

10%

Question 13

biomes in canada

Answer 13

tundra, decidus, grassland, boreal, mountain,

Question 14

Define the following terms: biomass, niche,

Answer 14

refers to weight biomass

niche role of organism in ecosyste

Question 15

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

Answer 15

temperature, salt consentration

Question 16

Give some examples of natural resource industries

Answer 16

forestry, loging, refineries

Question 17

Define the terms equilibrium

Answer 17

equilibirum - balance

Question 18

Define the terms biodiversity, species richness, and habitat loss

Answer 18

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

Question 19

Define the term fragmentation

Answer 19

dividing things into smaller pieces

Question 20

Define the term non-native species

Answer 20

spicies that are not found in area

Question 21

What are the 3 different ways forests can be harvested

Answer 21

clear cutting shelter wood cutting selective cutin

Question 22

Define the term pollution

Answer 22

releasing harmful toxins into tharth

Question 23

Define the term acid precipitation

Answer 23

rain that has a higher acid concentration

Question 24

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

Answer 24

burning, dispersal, vacuming,

Question 25

Why are plastics very harmful to some organisms

Answer 25

think it is food

Question 26

What is an engineered ecosystem

Answer 26

built/man-made

Question 27

What are monocultures

Answer 27

gorwing one type of crop in large quantities

Question 28

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

Answer 28

pest - unwanted organism

humans determine pests

Question 29

What are pesticides

Answer 29

harmful toxins that harm the unwanted organism

Question 30

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

Answer 30

broad - affects alot

narrow - affect few

Question 31

Define the terms bioaccumulation and bioamplification

Answer 31

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

Question 32

Define the term organic farming

Answer 32

use natural fertilizers and pesticies

Question 33

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

Answer 33

public transit, reusable energy,

Question 34

What are some differences between a natural and urban ecosystem

Answer 34

natural - not man made

urban - refers to city