Causes of Dead Zones
Effects of Dead Zone
Eutrophication
Prevention within Hawaii
100
What is the process that causes algal blooms?
The process of eutrophication.
100
How would dead zones decrease biodiversity?
Dead zones would decrease biodiversity by killing certain types of fish and ruining the environment they live in. If the dead zone was present in an area with unique types of marine life, they would possibly be wiped out.
100
Is eutrophication good or bad?
It is BAD!
100
Has Hawaii ever had any recorded deadzones?
No, it has not.
200
What are the two elements that contribute to algal blooms?
The two elements are phosphorus and nitrogen.
200
Exponential human growth creates dead zones and in turn the fishing industry....
suffers greatly. This affects the shortage of food worldwide.
200
Where do nitrogen and phosphorus come from?
They come from either fertilizer (nitrogen and phosphorus) and nitrogen oxide smog.
200
If a dead zone were to form in Hawaii where would it probably form?
It would form around one of the river basins entering the ocean.
300
Stratified water is...
when warm fresh water sits on top colder saltier water.
300
What types of marine life would be most affected by a dead zone?
Bottom dwellers would be most affected by dead zones. Things such as starfish, crabs, snails, etc cannot escape the dead zone and will die.
300
Is warm fresh water on top of the cold salt water or underneath it?
It is on top of the cold salt water.
300
Why would finding alternative transport methods other than cars be helpful in preventing dead zones?
This would mean that less fossil fuels would be burned, and therefore less nitrogen oxide smog would be produced.
400
What makes the Gulf of Mexico one of the worst dead zones on Earth?
The Gulf of Mexico is an especially bad dead zone because the Mississippi collects watershed containing fertilizers as it travels through continental USA and then deposits it into the Gulf. This results in a large amount of nutrient rich water within the Gulf of Mexico.
400
What type of effect would a dead zone in Hawaii have on the economy within Hawaii?
It would be very harmful to the economy because of the large tourism sector of the economy. Tourism really focuses on Hawaii's amazing nature, a large portion of it being marine life. The fishing industry would also be negatively effected.
400
The overgrowth of algal blooms can lead to...
the severe degradation of habitat.
400
What are ways in which a dead zone can be prevented within Hawaii?
In order to prevent a dead zone use of fertilizers should be regulated, recycling should be implemented, alternative transport to cars should be encouraged, and communities should be educated on the dangers of dead zones.
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