How can upwellings improve fishing for ocean fishermen?

Which ocean zone contains hydrothermal vents? How can upwellings improve fishing for ocean fishermen? They cause the ocean water to get warmer. They bring nutrients from the cold, deep ocean waters.

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Which supports the theory that some mountains were once at the bottom of an ocean?

Q. Which supports the theory that some mountains were once at the bottom of an ocean? Both mountains and ocean floors have similar minerals in their rocks.

Which best explains the importance of estuaries?

Which best explains the importance of estuaries? Estuaries are freshwater areas that support a large amount of living things. Estuaries are areas where freshwater and salt water collide, resulting in a large amount of biodiversity.

Which factors are most characteristic of a healthy body of water?

Scientists measure a variety of properties to determine water quality. These include temperature, acidity (pH), dissolved solids (specific conductance), particulate matter (turbidity), dissolved oxygen, hardness and suspended sediment. Each reveals something different about the health of a water body.

How would a large increase in the salinity of an estuary?

How would a large increase in the salinity of an estuary most likely affect the ecosystem of the estuary? All organisms would continue to live as they now do. The number of salt-tolerant organisms would increase, and the number of salt-intolerant organisms would decrease.

How would a large increase in the salinity of an estuary Mostlikely affect the ecosystem of the estuary?

How would a large increase in the salinity of an estuary most likely affect the ecosystem of the estuary? All organisms would die. All organisms would continue to live as they now do. The number of salt-tolerant organisms would increase, and the number of salt-intolerant organisms would decrease.

What benefits can estuaries provide to salmonids?

They provide homes for diverse wildlife, including popular fish species. They also support recreation, jobs, tourism, shipping, and more.

What increases salinity in an estuary?

Droughts reduce fresh water input into tidal rivers and bays, which raises salinity in estuaries, and enables salt water to mix farther upstream.

How does the water in an estuary compare to the water in the open ocean?

How does the water in an estuary compare to the water in the open ocean? Estuaries have less concentrated nutrients and salt. Estuaries have more concentrated nutrients and salt.

How are estuaries connected to oceanic organisms?

How are estuaries connected to oceanic organisms? Estuaries provide a nursery grounds for oceanic organisms. Which best explains what happens to nutrients in the ocean as a result of upwelling? Upwelling carries nutrients to the surface of the ocean.

How do scientists know that some mountains were once at the bottom of an ocean group of answer choices?

How do scientists know that some mountains were once at the bottom of an ocean? Freshwater rivers flow to the ocean. Saltwater fish are found in some mountain streams. Dinosaur bones have been discovered in the mountains.

Which of the following allows scientists to investigate what Earth’s climate was like over the past 740000 years?

Scientists can use both sea-floor sediment and ice cores to study climates that existed hundreds of thousands of years ago. They can compare evidence from each method to see if both agree about the climate of a particular period.

How can we improve the quality of water?

1. 1 Install a water filter.
2. 2 Replace or maintain water filters regularly.
3. 3 Flush tap water before using it.
4. 4 Clean out your faucet aerators.
5. 5 Drain your water heater once a year.
6. 6 Replace outdated plumbing.
7. 7 Avoid using hot tap water.
8. 8 Maintain your septic tank properly.

What evidence supports the idea that life on Earth has continually changed?

Fossils. Fossils provide solid evidence that organisms from the past are not the same as those found today, and fossils show a progression of evolution. Scientists determine the age of fossils and categorize them from all over the world to determine when the organisms lived relative to each other.

How do human activities affect water quality?

How do human activities affect water quality? Urban and industrial development, farming, mining, combustion of fossil fuels, stream-channel alteration, animal-feeding operations, and other human activities can change the quality of natural waters.

How can you help prevent water pollution?

1. Pick up litter and throw it away in a garbage can.
2. Blow or sweep fertilizer back onto the grass if it gets onto paved areas. …
3. Mulch or compost grass or yard waste. …
4. Wash your car or outdoor equipment where it can flow to a gravel or grassy area instead of a street.

What 3 factors affect salinity in an estuary?

Salinity will fluctuate with movement of the tides, dilution by precipitation, and mixing of the water by wind.

How will sea level rise impact estuaries and coastal wetlands?

Sea level rise threatens to inundate many coastal wetlands, with little room to move inland because of coastal development. Already sharply reduced in acreage, coastal freshwater wetlands are especially vulnerable to rising sea levels.

Why does an estuary have fluctuating salinity levels?

Why does an estuary have fluctuating levels of salinity? Because fresh water is constantly flowing out to the ocean and salty ocean water moves in with the tide. A scientist is studying an estuary in the Southern Hemisphere.

How do organisms adapt to estuaries?

In almost all estuaries the salinity of the water changes constantly over the tidal cycle. To survive in these conditions, plants and animals living in estuaries must be able to respond quickly to drastic changes in salinity. Plants and animals that can tolerate only slight changes in salinity are called stenohaline.

Why salinity is low at estuaries and?

Even during times of normal river flow, salinity in an estuary varies between high and low tide. The salinity is higher during high tide because more ocean water is moving in. Salinity is lower at low tide because freshwater is moving out as the ocean level is receding.

What types of things can raise or lower salinity?

Evaporation of ocean water and formation of sea ice both increase the salinity of the ocean. However these “salinity raising” factors are continually counterbalanced by processes that decrease salinity such as the continuous input of fresh water from rivers, precipitation of rain and snow, and melting of ice.

Why are estuaries important to our environment quizlet?

Estuaries are vital habitats for thousands of marine species. Estuaries have been called the “nurseries of the sea” because the protected environment and abundant food provide an ideal location for fish and shellfish to reproduce.

Why estuaries are a special kind a marine ecosystem?

Many different types of plant and animal communities call estuaries home because their waters are typically brackish — a mixture of fresh water draining from the land and salty seawater. This unique combination of salty and fresh water creates a variety of habitats.

Why is it important to protect estuaries and intertidal environment?

provide essential ecosystem services such as food provision, carbon storage, filtering nutrients and sediment in runoff from the surrounding catchment area and storm protection.

Why are many fishing boats found near ocean upwellings?

Why are many fishing boats found near ocean upwellings? There is less vegetation there. The water is less turbulent there. Many marine species gather there to eat the nutrients brought to the surface.

How do oceanic upwellings promote the growth of microscopic plankton?

How do oceanic upwellings promote the growth of microscopic plankton? They bring warmer water to the surface of the ocean. They bring dissolved nutrients to the surface of the ocean.

What are 4 ways estuaries provide protection for inland areas?

The marshy land and plants in estuaries filter these pollutants out of the water. The plants in estuaries help prevent shoreline erosion. Estuaries also protect inland areas from flooding and storm surges. When a storm hits, estuaries often absorb water from the storm before it can reach upland areas.

How do estuaries filter water?

They filter water brought in by the surrounding watershed, which is the area of land that drains into a particular body of water. This filtered water brings nutrients from the watershed, but also many of the pollutants.

Which can scientists infer when they find marine fossils on top of mountains?

Which type of rock forms from the cooling of lava? Which can scientists infer when they find marine fossils on top of mountains? The mountains were created by erosion.

What best describes the water found in estuaries?

Which best describes the water found in estuaries? Q. Estuaries are dynamic ecosystems where salt water and fresh water mix. Usually this happens as fresh water flows from a river to an ocean.

What can you do to help protect the intertidal zones and estuaries?

1. Volunteer with your local environmental organizations.
2. Pick up trash; participate in trash clean-up days.
3. Help plant trees or seagrass, or remove invasive vegetation.
4. Don’t litter: streets and storm drains empty into rivers and streams that drain into our estuaries.
5. Pick up your pet’s waste.

What supports the theory that some mountains were once at the bottom of an ocean?

Q. Which supports the theory that some mountains were once at the bottom of an ocean? Both mountains and ocean floors have similar minerals in their rocks.

How could you use the information in these rocks to organize events in Earth’s history?

Rocks tell us a great deal about the Earth’s history. Igneous rocks tell of past volcanic episodes and can also be used to age-date certain periods in the past. Sedimentary rocks often record past depositional environments (e.g deep ocean, shallow shelf, fluvial) and usually contain the most fossils from past ages.

Who was the first person on Earth?

Adam is the name given in Genesis 1-5 to the first human. Beyond its use as the name of the first man, adam is also used in the Bible as a pronoun, individually as “a human” and in a collective sense as “mankind”.

How will humans look in 100 000 years?

Lamm predicts that in 100,000 years our eyes will be significantly larger with some seriously interesting features. To protect our sight from cosmic rays, he thinks we might develop an “eye-shine to enhance low-light vision and even a sideways blink from a re-constituted place semilunaris.”

How old is the planet?

4.543 billion years

What happens to ocean water when it absorbs CO2?

Increasing CO2 in the ocean alters the chemistry of seawater – an effect known as ocean acidification – which has negative impacts on marine life.

What are the three main methods for constructing past climates?

The use of ice cores. Pollen analysis. Raised or drowned beaches. Tree ring dating.

How can I improve the water quality in my fish tank?

1. Start with Purified Water. The water you add to your tank can make keeping an aquarium easy or very difficult; here’s why. …
2. Don’t Over-feed the Aquarium. …
3. Swap Out your Mechanical Filter Media. …
4. Change Chemical Filter Media. …
5. Test the Water. …
6. Make Water Changes. …
7. Final thoughts.

What ways can you improve the water quality and quantity in your household?

• Improve sanitation facilities by providing toilets and latrines that flush into a sewer or safe enclosure.
• Promote good hygiene habits through education. …
• Implement rainwater harvesting systems to collect and store rainwater for drinking or recharging underground aquifers.

Which activities do you think has the greatest impact on water quality and availability?

Agriculture. Agriculture is a huge contributor to water pollution, from fertilizers used for row crops to the manure created by large-scale animal agriculture.

What human activities cause water pollution?

• Rapid Urban Development.
• Improper Sewage Disposal.
• Fertilizer Run-Off.
• Oil Spills.
• Chemical Waste Dumping.
• Radioactive Waste Discharge.

How does salinity affect the ocean?

Salinity can affect the density of ocean water: Water that has higher salinity is denser and heavier and will sink underneath less saline, warmer water. This can affect the movement of ocean currents. It can also affect marine life, which may need to regulate its intake of saltwater.

Why is salinity important in the ocean?

It is a strong contributor to conductivity and helps determine many aspects of the chemistry of natural waters and the biological processes within them. Salinity, along with temperature and pressure, helps govern physical characteristics of water such as density and heat capacity.

How do fish depend on estuaries?

And many marine organisms, including most commercially-important species of fish, depend on estuaries at some point during their development. Because they are biologically productive, estuaries provide ideal areas for migratory birds to rest and refuel during their long journeys.

How do organisms adapt to estuaries?

In almost all estuaries the salinity of the water changes constantly over the tidal cycle. To survive in these conditions, plants and animals living in estuaries must be able to respond quickly to drastic changes in salinity. Plants and animals that can tolerate only slight changes in salinity are called stenohaline.

How do ocean plants adapt?

TL;DR: Ocean plants have developed adaptations such as the ability to absorb nutrients from water, the ability to float and the ability to anchor themselves to rocks on the ocean floor in order to thrive in their challenging environment.

What adaptations do animals need to survive in the ocean?

Common oceanic animal adaptations include gills, special breathing organs used by some oceanic animals like fish and crabs; blowholes, an opening on the top of the head that’s used for breathing; fins, flat, wing-like structures on a fish that help it move through the water; and streamlined bodies.

What is the salinity of the ocean?

The concentration of salt in seawater (its salinity) is about 35 parts per thousand; in other words, about 3.5% of the weight of seawater comes from the dissolved salts. In a cubic mile of seawater, the weight of the salt (as sodium chloride) would be about 120 million tons.

How do you make ocean salt water?

To make seawater at home, add 35 grams of salt to a beaker, and then add tap water until the total mass is 1,000 grams, stirring until the salt is completely dissolved in the water. Tap water often contains lots of natural minerals found in seawater, such as magnesium and calcium.

What causes the changes of salinity of water in estuaries?

In a typical estuary, there is a constant change in the salinity of the water. As the tide rises, water from the ocean begins to surge into the mouth of a river, bringing with it higher levels of salt. This results in an increase in the salinity of the water in an estuary.

Are estuaries freshwater or saltwater?

Estuaries and their surrounding wetlands are bodies of water usually found where rivers meet the sea. Estuaries are home to unique plant and animal communities that have adapted to brackish water—a mixture of fresh water draining from the land and salty seawater.

What is the main thing that kills organisms in estuaries?

Pollution is probably the most important threat to water quality in estuaries. Poor water quality affects most estuarine organisms, including commercially important fish and shellfish.

How will climate change affect estuaries?

Climate changes, rising sea levels, drought and ocean acidification threaten to degrade estuaries. Rising sea levels will move ocean and estuarine shorelines by inundating lowlands, displacing wetlands and altering the tidal range in rivers and bays.

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