unit 6

Question 1

ecology

Answer 1

study of relationships between organisms and their environment

Question 2

habitat

Answer 2

where you live

Question 3

niche

Answer 3

role in the ecosystem

Question 4

biosphere

Answer 4

all the parts of earth where living things exist

Question 5

biomes

Answer 5

all ecosystems of similar climate

Question 6

ecosystem

Answer 6

all biotic and abiotic

Question 7

biotic factors

Answer 7

living things

Question 8

abiotic factors

Answer 8

non-living things

Question 9

community

Answer 9

all the different populations in an area (trees, sheep, grasses, insects)

Question 10

populations

Answer 10

all of one species in one area

Question 11

organism

Answer 11

one individual

Question 12

food chain

Answer 12

shows energy flow through an ecosystem

Question 13

food web

Answer 13

more complex, shows many possible food chains together

Question 14

producers

Answer 14

make their own food

Question 15

consumers

Answer 15

get energy by eating other organisms

Question 16

autotrophs

Answer 16

producers

Question 17

heterotrophs

Answer 17

consumers

Question 18

herbivores

Answer 18

only eat plants

Question 19

carnivores

Answer 19

eat only meat

Question 20

omnivores

Answer 20

eat plants and animals

Question 21

scavengers

Answer 21

eat already dead organisms

Question 22

decomposers

Answer 22

break down dead organic material

Question 23

what limits the number of organisms in each trophic level?

Answer 23

energy

Question 24

how much energy is lost at each level?

Answer 24

90%

Question 25

photosynthesis

Answer 25

autotrophs use co2 and suns energy to make food for growth and energy

Question 26

cellular respiration

Answer 26

consumers eat food and release co2

Question 27

fossil fuels

Answer 27

coal, oil, gas (made from organic material) release co2 when burned

Question 28

density dependent factors

Answer 28

things that happen because of an ecosystems size

Question 29

density independent factors

Answer 29

things that happen regardless of an ecosystem's size

Question 30

examples of density-dependent factors

Answer 30

-predation -disease -parasitism

Question 31

examples of density-independent factors

Answer 31

-deforestation -natural disasters -severe frost

Question 32

what are the 6 main biomes?

Answer 32

taiga, grasslands, tundra, deciduous forest, tropical rain forest, desert

Question 33

taiga

Answer 33

a cool forest of conifers in the upper northern hemisphere

Question 34

deciduous forest

Answer 34

a forest biome with many kinds of trees tat lose their leaves each autumn

Question 35

tropical rain forest

Answer 35

a hot, humid biome near the equator with much rainfall and a wide variety of life

Question 36

desert

Answer 36

a sandy or rocky biome with little precipitation and little plant life

Question 37

tundra

Answer 37

a cold biome of the fr north, the ground is frozen even in summer

Question 38

grasslands

Answer 38

a biome where grasses, not trees, are the main plant life

Question 39

what is biodiversity

Answer 39

variety of species on earth