communities and immigration/dispersal

Question 1

community

Answer 1

all populations of species interacting in 1 space

Question 2

communities differ from ecosystems…

Answer 2

community = all biotic
ecosystems = all biotic and abiotic

Question 3

the difference between food chains and food webs

Answer 3

food webs are a more accurate representation bc organisms interact w/ all organisms (ex: eat multiple things)

Question 4

producers

Answer 4

autotrophs; convert sun to chemical energy

Question 5

examples of producers

Answer 5

plants, cyanobacteria

Question 6

primary consumers

Answer 6

heterotrophs (consume producers)

Question 7

examples of primary consumers

Answer 7

all herbivores

Question 8

secondary consumers

Answer 8

carnivores; consume smaller animals (primary consumers)

Question 9

example of secondary consumers

Answer 9

foxes

Question 10

tertiary consumers

Answer 10

large carnivores; consume large animals

Question 11

examples of tertiary consumers

Answer 11

lions, tigers

Question 12

energy between trophic levels is lost through ___

Answer 12

heat

Question 13

only ~__% of energy gets converted between trophic levels

Answer 13

10% (90% = lost)

Question 14

as you go up trophic levels, the number of individuals at the next trophic level ___ bc ___

Answer 14

decreases, bc less energy is available for them

Question 15

bioaccumulation

Answer 15

growth/accumulation of materials w/in individual organisms

Question 16

trophic levels

Answer 16

levels w/in food chains/webs

Question 17

biomagnification

Answer 17

increased concentration of toxins as you move up trophic levels