WorksheetsResources and Dead Zones
Total questions: 13
Worksheet time: 9mins
Overfishing results when
Too many fish in the population are being caught
The fish is not reproducing enough to maintain its population
The fish keeps reproducing and multiplying out of control
Which data may scientists use to monitor the health of a fish population?
How much a particular fish is caught during the year
Average mass of the fish
The size of population of the fish
True or False: An unhealthy fish population does not affect the food web for that ecosystem.
True
False
Which of these factors are affected in a dead zone?
Nitrogen
Phytoplankton
Bacteria
Fish
True or False: Fertilizers used for growing crops always stay within the boundaries of the farm.
True
False
The resource that organisms compete for in a dead zone is
phytoplankton
algae
decomposer
oxygen
Which of the following factors increase in a dead zone?
Nitrogen
Phytoplankton
Decomposer
Fish
In a dead zone, _________ levels are really low such that living organisms are not able survive.
nitrogen
oxygen
fertilizer
carbon dioxide
Based on the diagram, which fish species is in a breeding zone with higher oxygen levels?
Fish Species 1
Fish Species 2
For the fish eggs to mature properly and hatch, there must be at least 2 mg/L of oxygen in the water. Which fish species is more likely going to breed successfully?
Fish Species 1
Fish Species 2
The long term effects of a dead zone includes all of the following except for
Fisherman may struggle to catch any fish.
The crops of farmers stop growing.
The health of the fish population declines.
There is an increase in the population of decomposers such as bacteria.
The size of dead zones will ________ with more nitrogen run-off.
Increase
Stay the same
Decrease
True or False: Dead zones only affect small streams and rivers, not the oceans.
True
False
