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Earth Science c/o habitat, niche, home range and territory

1.  the crayfish scavenge for dead fish and decaysed vergetation at teh bottom of the pond. this discribes the crayfish's
 
a.  habitat
b.  niche
c.  home range
d.  territory
 
2.  scientis carried out experiments in which they tag crayfish with microchips to study their movements throughout the day.  in studying their movements, the scientists are studying the crawfish's
 
a.  habitat
b.  niche
c.  home range
d.  territory
 
3.  a crayfish lives in a shallow pond along with frogs, turtles various insects and small fish.  meadowsweet grows on the banks of the pond which is rimmed with grasses and reeds.  the pond would be considered the crayfish's
 
a.  habitat
b.  niche
c.  home range
d.  territory
 
thanks
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1 Answer

The crayfish looks for food/forages in its habitat with likely knowledge of the available food in the broader territory that it shares with other species.
 
Scientists put a microchip tag on crayfish to find out how far it can travel during foraging episodes. The movement defines its home range.
 
The crayfish shares its habitat with other species that the question includes.
 
Hope this helps.