vocab
what does abiotic mean
a nonliving thing
what starts the food chain?
producers
what is a aquatic ecosystem? what is a terrestrial ecosystem?
aquatic = water ecosystems
terrestrial = land ecosystems
what does biotic mean
a living thing
what ends the food chain?
decomposers
what are the 3 types of terrestrial ecosystems?
grassland, rainforest, forest
what is the difference between aquatic and terrestrial ecosystems?
aquatic is on water, terrestrial is on land
Sam creates the following food chain:
grass -> rabbits -> fox -> hawk
What would happen in the food chain if the number of rabbits increased? (2 ANSWERS)
A There would be more food for the foxes.
B The hawks' food would decrease.
C There would be no change in the food chain.
D The amount of grass would decrease.
A There would be more food for the foxes.
D The amount of grass would decrease.
what are the 4 types of aquatic ecosystems?
ocean
pond/lake
river/stream
saltmarsh/estuary
producer - makes their own food (grass, tree, flower, seaweed)
consumer - eats other living things for energy (coyote, bird, humans)
decomposer - breaks down dead things for nutrients (mushroom, bacteria, fungi, earthworm)
If a heron (bird) eats a fish in a pond ecosystem, what would happen if the fish population was to increase?
A The heron population would increase.
B The heron population would decrease.
C The bald eagle population would slowly decrease and then sharply increase.
D The bald eagle population would remain constant.
A The heron population would increase.
What is the aquatic ecosystem that has brackish water called?
Saltmarsh or Estuary
what does the word brackish mean
a mixture of salt and freshwater
Which model shows a flow of energy through a terrestrial ecosystem?
A Pine tree → fox → sun → fungi
B Fox → pine tree → fungi → sun
C Fungi → fox → sun → pine tree
D Sun → pine tree → squirrel → fungi
D Sun → pine tree → squirrel → fungi
what land-based ecosystem has fertile soil, tall grasses, and varying temperatures?
A rainforest
B forest
C grassland
D pond