Chapter 15 Marine
Terms in this set (46)
This preserves the ocean as a resource and is fundamental to protecting biodiversity.
Maintain fish populations
Petroleum, natural gas, and methane hydrates
Water, fish, seaweed, and wave energy
A net stretched across the water intended to interrupt schools of swimming fish is known as a
Ice crystals containing methane.
Longlines with colored flapping streamers that function like scarecrows in a corn field and frighten sea birds from diving for fish or becoming entangled in the longline nets where they might become part of the bycatch.
How can commercial fisheries move towards being more sustainable?
Desalinization, reverse osmosis, and the water cycle.
Fresh water is a growing concern for the future. How do we get it from the sea?
it allows for dolphin bycatch.
Fishing using a purse seine net is a non-sustainable fishing method because...
Fishing practices that do little harm to fish populations, but result in bycatch, are known as:
mercury and lead leaking out into the oceans.
Environmental concerns about creating new offshore drilling sites include:
Commercial fish are found in the waters of...because these are highly productive areas with
Cod would be considered a...resource, whereas petroleum would be considered a...resource.
looking for medicines in sea organisms
sand and gravel
Among physical marine resources,...is/are second only to gas and oil in terms of their annual economic value
They do not overfish or over hunt.
Why are the indigenous peoples of Canada and Alaska considered to be sustainable fishers?
will fail to meet future deadlines.
The predicted trend is that worldwide fisheries...
Rod & reel and fishing pole.
Which type of fishing is considered to be sustainable?
The reduction of the stock of a single fish species by overfishing...
can cause an impact on the entire food web.
Which animals were most affected by longline fishers changing to the use of circle hooks instead of J hooks?
How are fishing quotas determined?
By using scientific data.
The removal of fossil fuels from beneath the seafloor is known as:
Whale populations were sustainable until 1868 because the...
modern harpoon did not exist.
Why have fish stocks in the Atlantic Ocean have been unable to rebound?
Because they are taken before they can reach sexual maturity.
Tuna are currently a...resource, but whales are probably a ...resource.
A benefit for society provided by commercial fisheries is:
people can buy fish and they don't have to go out and catch fish.
Whaling continues despite the IWC moratorium because...
research is permitted, native cultures are permitted to whale, and countries are not obligated to conform.
The ocean can provide renewable energy by:
wind waves, tides, and OTEC.
What is the modern fishing practice that is most damaging to ocean ecosystems?
The growth trend in aquaculture is:
Some nonrenewable resources are:
petroleum, natural gas, and methane hydrates.
The fish group that accounts for the largest commercial harvest is:
herring, sardines, and anchovies.
A negative effect of offshore drilling is the:
removal of the incentive to find more sustainable methods.
The accidental catch of non-targeted organisms while fishing is known as:
Some potentially renewable resources are currently nonrenewable because...
species are taken faster than they can reproduce.
According to the United Nations Food and Agriculture Organization (FAO), the trend in the world fish catch since World War II has been:
About...of the world's seafood comes from aquaculture.
Scientists think oil and natural gas form from the remains of:
plants and animals over long periods of time under tremendous heat and pressure.
After the IWC moratorium on whaling in 1986, whale populations...
improved only for some species, not for all.
Problems with aquaculture include it contributes to:
overfishing, diseases can spread quickly, and release of waste can cause algae blooms.
Methane hydrates are not currently used as an energy source because...
they are dangerous to handle.
One of the most common uses of algae is as...
Modern commercial fishing practices ARE, ARE NOT sustainable.
Oil companies extract oil and natural gas from the seabed by:
drilling from oil platforms and using special equipment to minimize an oil spill.
Non Extractive resources DO, DO NOT take anything from the sea.
Of the possible renewable energy sources, the one that appears most feasible is