lake whatcom is now classified as being oligotrophic.T/F?
Answers
False, Lake Whatcom is currently classified as being mesotrophic rather than oligotrophic.
Lake Whatcom, located in Washington State, has experienced a shift in its classification due to increased nutrient levels and water quality concerns. While it may have been oligotrophic in the past, meaning that it had low nutrient levels and high water clarity, it is now considered mesotrophic. This change is largely attributed to increased levels of phosphorus and other nutrients entering the lake from various sources, such as stormwater runoff, septic systems, and fertilizers.
As a mesotrophic lake, Lake Whatcom has a moderate level of nutrients and productivity, which can lead to increased algal growth and reduced water clarity. This change in classification is concerning for both ecological and public health reasons, as it can negatively impact aquatic life, increase the risk of harmful algal blooms, and affect drinking water quality for the surrounding communities. Efforts to mitigate these issues and improve the lake's water quality are ongoing, including monitoring, education, and implementing best management practices to reduce nutrient inputs into the lake.
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Related Questions
(i) What are tectonic plates?
Answers
Answer:
A tectonic plate is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere
Explanation:
Answer:
Tectonic plates are pieces of Earth's crust and uppermost mantle, together referred to as the lithosphere. The plates are around 100 km (62 mi) thick and consist of two principal types of material: oceanic crust (also called sima from silicon and magnesium) and continental crust (sial from silicon and aluminium)
Explanation:
discusss possible causes of climate change. support your discusssion with examples, pictures, diagrams, photos etc
Answers
Climate change is a complex phenomenon influenced by various natural and human-induced factors. Below are some of the causes:
What are the causes of climate change?The causes are listed below:
1. Greenhouse Gas Emissions: The primary driver of climate change is the increase in greenhouse gases (GHGs) in the atmosphere, mainly carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). These gases trap heat radiating from the Earth's surface, causing the planet to warm.
Example: This diagram illustrates the greenhouse effect, showing how greenhouse gases trap heat in the atmosphere and contribute to global warming.
[Description of diagram: The diagram depicts the Earth with rays of sunlight entering the atmosphere. Some rays are absorbed by the Earth's surface, while others are reflected back towards space. The diagram shows greenhouse gases (represented by molecules) trapping some of the reflected rays, preventing them from escaping to space. This causes the Earth's temperature to increase.]
2. Deforestation and Land Use Changes:
Deforestation, primarily driven by agricultural expansion, logging, and urbanization, leads to the release of stored carbon in trees and vegetation. When forests are cleared or burned, the carbon they contain is released as CO2, contributing to increased greenhouse gas concentrations.
Example: A photo showing a forested area being cleared to make way for agriculture or urban development.
3. Industrial Processes:
Industrial activities, particularly in sectors like cement production, steel manufacturing, and chemical production, emit significant amounts of CO2 and other greenhouse gases.
Example: A picture of a large industrial complex or factory with smokestacks emitting dark smoke, representing air pollution and greenhouse gas emissions.
4. Agriculture and Livestock:
Agricultural practices contribute to climate change through various mechanisms. The use of synthetic fertilizers releases N2O, a potent greenhouse gas. Rice cultivation in flooded fields emits methane, another potent greenhouse gas.
Example: An image depicting a farmer applying fertilizers to crops or a rice paddy field with flooded conditions, both representing agricultural practices that contribute to greenhouse gas emissions.
5. Changes in Land Use and Urbanization: These changes can disrupt natural climate regulation processes and contribute to the urban heat island effect, where cities experience higher temperatures compared to surrounding rural areas.
Example: A satellite image showing the expansion of urban areas, with a clear distinction between densely built-up regions and the surrounding natural landscapes.
It's important to note that these causes of climate change interact with each other and have both local and global impacts.
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describe how and why stratospheric ozone is beneficial for people, whereas tropospheric ozone is harmful.
Answers
Ozone in the stratosphere protects people from UV rays, but when it is in the troposphere, it is harmful to people since it is a greenhouse gas. Human activity contributes to tropospheric ozone through pollution.
The stratosphere (upper layer) and the troposphere are the two layers of the atmosphere where the reactive gas ozone (O3) is found (at ground level and up to 15km). Ozone shields Earth's life from the sun's UV radiation in the stratosphere. In contrast, it is a significant greenhouse gas and air pollutant at lower concentrations, which is bad for the wellbeing of people and ecosystems. It contributes significantly to urban pollution as well.
With an air lifespan of from a few hours to a few weeks, tropospheric ozone is a transient climatic pollutant. It is a secondary gas generated by the interaction of sunlight with hydrocarbons, including methane, and nitrogen oxides, which are emitted by automobiles, fossil fuel power plants, and other man-made sources.
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A student is comparing the three types of celestial bodies, comets, asteroids, and meteor. Which questions would yield the most
information about a celestial body passing close by the Earth and why? Select ALL that apply.
A)
Is the object larger than 5 km in width? If so, it is a meteor.
B)
Is the object made of ice and dust? If so, it is likely a comet.
Is the object comprised of mostly gas? If so, it is likely an asteroid.
D)
Is the object between Mars and Jupiter? If so, it is likely an asteroid.
Is the objecta smaller piece broken from a larger body? If so, it is likely a
E)
meteor
Answers
Answer:
Is the object made of ice and dust? If so, it is likely a comet.
Explanation:
Comets are the bodies of the solar system that have the smallest diameter in relation to other bodies. Each comet has its divinity structure in the nucleus, hair and tail and its composition is composed of rock, dust and ice. This ice is quite dirty, because of all the dust and can make up most of the comet, reaching dozens of tons, but it can also be presented in smaller quantities.
B) is the object made of ice and dust? if so, it is likely a comet
D) is the object between Mars and Jupiter? if so, it is likely an asteroid
E) is the object a smaller piece broken from a larger body? if so, it is likely a meteor
HELP PLEASE! 50 POINTS!
:)
Erosional processes and lithology - Geography
Answers
Answer:
This is a scale to compare sizes
¿por qué al trazar líneas paralelas al ecuador las regiones tienen los mismo biomas y en la misma distribución?
Answers
Answer:
plz post english plz do i need english
the Barringer crater in Arizona is an example of possible climate change from a(n) _______.
A)
earthquake
B)
asteroid impact
C)
volcanic eruption
D)
sinkhole
Answers
The Barringer Crater in Arizona is an example of a possible climate change from an asteroid impact. The Barringer Crater, also known as Meteor Crater, was formed around 50,000 years ago when a large meteorite collided with the Earth's surface.
The impact resulted in a massive explosion and the formation of the crater. Such a significant impact event can have far-reaching effects on the climate, including changes in atmospheric composition, temperature, and the distribution of sunlight. The release of dust, debris, and gases into the atmosphere can alter weather patterns and potentially lead to climate change on a global scale.
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Subject : Geography
Topic: Resources and Economic activities.
Question - Ways of making a living is called an_____.
Answers
Answer:
Earning
Explanation:
What is the main reason that Earth is warmer at the equator than at the North and South Poles?
A. Glaciers at the poles keep temperatures in those regions low.
B. The sun's rays do not reach the poles.
C. The sun's rays hit the planet more directly at the equator.
D. Strong prevailing winds blow throughout the year at the poles.
Answers
Answer:
C. The sun's rays hit the planet more
Explanation:
Why is there different time zones in different parts of the world?
What's the time zone in your country?
Answers
m2271 +
60
X
1
2
3
4
Answers
Be careful you put the message on the wrong subject but I hope you could get still some help
Bye and don’t forget I’m proud of you!<3
Explain how TNCs encourage rapid development in a country
Answers
esperanto definition is:
Answers
Answer:
Esperanto is an artificial international auxiliary language (IAL) created in 1887.It is based on the idea of creating a neutral, easy-to-learn language that could be used as a common means of communication between speakers of different languages. Esperanto is characterized by its simple grammar and regular structure, which make it easy to learn and use.
Explanation:
Examine how tourism in mountainous areas can both have positive and negative impacts (2 examples each or more)
Answers
Answer:
Please see below :)
Explanation:
Positive of Tourism in mountainous areas: It allows for locals to star earning money/starting a business. They can provide food and lodging for tourists who come to visit.
Positive of Tourism in mountainous areas: The people who visit can be educated on how to preserve natural beauty spots (like in the mountains). It allows greater understanding to be spread on why we need to protect areas of natural beauty.
Negative of Tourism in mountainous areas: People who live nearby might become frustrated at the amount of noise/air pollution being caused by Tourists. It could also create a loss of cultural identity among the mountain people.
Negative of Tourism in mountainous areas: Tourists can cause air pollution (from vehicles) and damage the surrounding environment (littering etc). This means that there is a big environmental impact and habitats might be severely impacted.
Negative of Tourism in mountainous areas: Tourism might cause erosion. This erosion is damaging for any wildlife, but also could consequently cause less Tourists to visit.
Hope that helps!
A mineral has a mass of 24
grams and a volume of 8 cubic
centimeters. What is the
density of the mineral?
Hint: d=m/v
A. 32 grams/cubic centimeter
B. 3 grams/cubic centimeter
C. 160 grams/cubic centimeter
D. 16 grams/cubic centimeter
Answers
The ideal decision is an option (b). The mineral has a density of 3 grams per cubic centimeter.
What is the geology of mineral density?The density of a mineral is a fundamental physical characteristic that depends on the composition and atomic arrangement of the material. Having an intrinsic attribute indicates that it applies to the mineral regardless of sample size or form.
Specific gravity, which measures the density of the rock about the density of water, is typically used to express the densities of rocks and minerals. Because water has a density of 1 gram per cubic centimeter, or 1 g/cm3, this isn't as difficult as you may imagine.
In the given question:
Mass= 24 grams
Volume= 8 cubic centimeters
Density= Mass / Volume
Density= 24 / 8
Density= 3 grams/cubic centimeter
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What materials were used to determine the age of the earth?.
Answers
Answer:
The best estimate for Earth's age is based on radiometric dating of fragments from the Canyon Diablo iron meteorite. From the fragments, scientists calculated the relative abundances of elements that formed as radioactive uranium decayed over billions of years.
Explanation:
The age of the rocks of the moon, earth, and meteorites which have not been changed by the rock cycle, is measured. this in turn helps in determining the age of the earth.
What is the age of Earth?The estimated age of the earth is 4.54 billion years. Carbon dating is a specific type of Radiometric dating. The Radiometric dating of pieces of these rocks was used to calculate the age of the earth.
Scientists have reached this conclusion by dating the rocks of Earth and its neighbors such as the moon and meteorites.
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Who are the windrush generation ???
Answers
the spacecraft that visited pluto and sent back our first images: show answer incorrect answer please select the best choice from the available options. was called new horizons got a gravity boost from jupiter to get it to pluto faster used plutonium to keep it warm is returning to earth in the 22nd century more than one of these
Answers
The spacecraft that visited Pluto and sent back our first images was called New Horizons. It was launched in 2006 and completed its mission in 2015. It was the first mission to explore the dwarf planet, and it provided humanity with a wealth of knowledge about it.
New Horizons received a gravity boost from Jupiter to get it to Pluto faster and used plutonium to keep it warm. The craft also sent back amazing pictures of Pluto and its moons, and the data it collected is helping scientists learn more about the dwarf planet.
The spacecraft is now heading back to Earth, and it is expected to reach its destination in the 22nd century. The data from New Horizons is providing us with a better understanding of the mysterious outer reaches of our solar system.
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which of the following pieces of evidence most strongly supports the common origin of all life on earth?fduring periods of rapid environmental change, what may happen to a species that was well-suited to the former environment
Answers
The piece of evidence that most strongly supports the common origin of all life on earth is the universal genetic code.
All living organisms on earth use the same genetic code to translate DNA sequences into proteins, indicating a common ancestor.
Regarding the second part of the question, during periods of rapid environmental change, a species that was well-suited to the former environment may struggle to adapt and survive. This can lead to a decline in population, extinction, or evolution into a new species better adapted to the new environment.
Environmental changes can include natural disasters, climate change, or human activities such as deforestation or pollution. Therefore, it is important to understand the impact of environmental changes on different species and take steps to protect the natural world.
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How does a physical map represent relief?
Answers
Answer: A relief map shows the changing gradient of elevation, which is called "relief." A physical map can be said to be a kind of relief map, usually showing changing elevation with higher elevations being represented by darker colors. However, a physical map may also show other features, such as rivers or deserts.
Solve for xxx in the diagram below.
x=x=x, equals
^\circ
∘
degrees
Answers
Answer:
x =20
Explanation:
these are equivalent, so to get to 60 you nees 20
1.
People's activities __a.__
the physical environment and the physical environment __b.__
people.
a.
1. Have no affect on
2. May affect
b.
1. May affect
2. Have no affect on
Answers
Answer:
May affect Have no affect
A secular government seeks to separate its decisions and policies from __________ influences. A. legislative B. religious C. political D. executive Please select the best answer from the choices provided. A B C D
Answers
Answer:
religious
Explanation: hope this helps ✊✊✊✊✊✊ （づ￣3￣）
Answer:
It's B!
Explanation:
Took the test on edge :)
9. During which period did people move to cities in the largest numbers
Answers
The Agricultural revolution
11. What did Hugh Capet and his heirs accomplish in France?
A. They got the French to adopt Christianity.
B. They brought about a republic.
C.They introduced a Latin-based language.
D. They strengthened the monarchy.
Answers
Answer: D. They strengthened the monarchy.
Explanation:
Hugh Capet established the Capetian dynasty that ruled France for over 300 years. After being elected as King, Capet made Paris his capital and began bringing the rest of France under his control.
In doing so he managed to begin the process of strengthening the monarchy that was continued by his descendants until the end of the dynasty thereby laying the foundation for France as it is today.
Which of the following best describes language patterns in Europe
Answers
Italic languages are also a part of the Indo-European language family. These languages are spoken in much of Italy and include Latin which was originally the language of Rome. Etruscan, which is spoken in what is now Tuscany and was the most important language spoken in Italy around 500 BC, this language is not part of the Indo-European language family and was abandoned as Latin took over the area.
is this statement true or false? the sahara desert region is not lush in vegetation, except in the nile valley basin.
Answers
Answer:
True
Explanation:
The statement is accurate that the Sahara Desert region is not lush in vegetation, except for the Nile Valley basin which enjoys abundant fertility due to seasonal flooding from the Nile River.
The statement is generally true. The Sahara Desert is known for its arid and dry conditions, making it inhospitable for lush vegetation to thrive.
The majority of the Sahara is characterized by a lack of significant vegetation cover, with vast stretches of sand dunes, rocky landscapes, and sparse vegetation adapted to desert environments, such as drought-resistant shrubs and grasses.
There is an exception to this in the Nile Valley basin. Along the Nile River, which runs through the Sahara, there is a narrow strip of fertile land that supports more abundant vegetation. The presence of water from the Nile allows for the growth of vegetation, creating a green corridor amidst the surrounding desert. This region benefits from irrigation and the availability of water, making it possible for agricultural activities and the cultivation of crops.
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Index fossils are used to date rock strata that would otherwise be very difficult to date. Which of these statements describes a key characteristic of index fossils?
Answers
Answer: They existed for a short span of time.
Explanation:
Index fossils are also referred to as the indicator fossils and they are simply used to define the faunal stages.
Some of the characteristics possessed by the index fossils include:
• geographic distribution that's wide
• short vertical range
• rapid evolutionary trends.
How much (as a percentage) of the Earth's water is stored in underground aquifers? a little over 20 about 74 ОА а OB o less than 1 D about 5.3 about 112 ОЕ F. about 17.6
Answers
About 17.6% of the Earth's water is stored in underground aquifers. The most of the water on Earth is stored in the oceans and other bodies of salt water, which account for about 97.5% of all water.
The remaining water is freshwater, which makes up only about 2.5% of all the water on Earth. Approximately 30% of freshwater is in the form of groundwater.
Most of the Earth's freshwater is in the form of ice, which includes glaciers, ice caps, and ice sheets, as well as the permanent snowpack on mountaintops and in the polar regions.
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The global pattern of gender inequality index scores is similar to the expected pattern of countries by level of economic development, with the exception of a few countries such as
(A) South Africa, Australia, and New Zealand
(B) Japan, Spain, and Canada
(C) Venezuela, Syria, and Iraq
(D) Brazil, Libya, and China
(E) Mexico, Argentina, and India
Answers
The countries that seem to be exempt from the trend described are (D) Brazil, Libya, and China.
Gender Inequality and Economic development. These variables are negatively correlated. Countries with low gender inequality usually see high economic development.Libya and China are not yet completely developed countries and yet have high rates of gender equality which goes against the trend described.
In conclusion, option D is correct.
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