Question

6. Give Reason:
d) Oceans are very important to us.
a) The Appalachians Mountains are lower in heigt
b) The Pacific Ring of Fire is prone to earthquake
c) There is a shortage of fresh water,
e) Old fold mountains are rounded peaks while young fold mountains have stvarp, gente pas​

Answer 1

Answer:

I will be able to answer c

Explanation:

1) The Earth's short supply of water is distributed all over the planet.

2)The shortage of water is either due to water pollution or due to drying up of water sources

Hope my answer helped you

Answer 2

Answer:

answers d)

Explanation:

The ocean produces over half of the world's oxygen and absorbs 50 times more carbon dioxide than our atmosphere.Covering 70 percent of the Earth's surface, the ocean transports heat from the equator to the poles, regulating our climate and weather patterns.From fishing to boating to kayaking and whale watching, the ocean provides us with many unique activitiesMany medicinal products come from the ocean, including ingredients that help fight cancer, athritis, Alzheimer's disease, and heart diseaseHumans began to mine the ocean floor for diamonds, gold, silver, metal ores like manganese nodules and gravel mines in the 1950’s when the company Tidal Diamonds was established by Sam Collins. Diamonds are found in greater number and quality in the ocean than on land, but are much harder to mine. When diamonds are mined, the ocean floor is dredged to bring it up to the boat and sift through the sediment for valuable gems. The process is difficult as sediment is not easy to bring up to the surface, but will probably become a huge industry once technology evolves to solve the logistical problem.

Metal compounds, gravels, sands and gas hydrates are also mined in the ocean. Mining of manganese nodules containing nickel, copper and cobalt began in the 1960’s and soon after it was discovered that Papua New Guinea was one of the few places where nodules were located in shallow waters rather than deep waters. Although manganese nodules could be found in shallow waters in significant quantities, the expense of bringing the ore up to the surface proved to be expensive. Sands and gravels are often mined for in the United States and are used to protect beaches and reduce the effects of erosion.

Mining the ocean can be devastating to the natural ecosystems. Dredging of any kind pulls up the ocean floor resulting in widespread destruction of marine animal habitats, as well as wiping out vast numbers of fishes and invertebrates. When the ocean floor is mined, a cloud of sediment rises up in the water, interfering with photosynthetic processes of phytoplankton and other marine life, in addition to introducing previously benign heavy metals into the food chain. As minerals found on land are exploited and used up, mining of the ocean floor will increase.