The Egyptians were the first to make written symbols for letters and sounds.


True or False

Answer: Persia is a historic region of southwestern Asia associated with the area that is now modern Iran.

the people there will lose their livelihood and they will also lose their food supply

Sea water trapped in a lake become saltier as glaciers form on top of it because the water has an unusually salty consistency, its have a lower freezing point, thus, making it not freeze as it passes across the glacier.

With a percentage of sodium by percentage of 43.3%, Gaet'ale Pond in Ethiopia's Danakil Depression is the saltiest body of water, followed by the Dead Sea with a percentage of 23.1%, Joaqun Pond Lake in Antarctica with a percentage of 40.2%, and the world's oceans with an average salt content of 3.38%.

Salt lakes, often referred to as saline lakes, are frequently found to contain sodium chloride and other dissolved salts. A typical definition calls for three grams of salt or more per liter.

Salt lakes that sporadically contain more salt than saltwater are known as hypersaline lakes. Although majority of the city's population are Latter-Day Saints (Mormons), Salt Lake City has long been renowned as their religious center.

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The magnetosphere of a planet is the region around the planet where the magnetic field is able to deflect the solar wind and other charged particles.

A planet's magnetosphere is the area of space surrounding the planet where its magnetic field interacts with charged particles, such as those carried by the solar wind. The magnetic field of a planet, generated by its core, extends into space and forms a protective shield around the planet. This shield helps to deflect and trap charged particles, preventing them from directly impacting the planet's surface. The magnetosphere plays a crucial role in protecting a planet's atmosphere and surface from the harmful effects of the solar wind.

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Answer:

I think for protection

Explanation:

I think they did this for protection because there were Vikings and other threats to them.

Answer:

Explanation:

to make the way through thick forest and for hunting.

Answer:

mercy is the nearest planet to SUN

u r asking about sun right..

Answer:

Answer:

181.7

Explanation:

Answer:

physical weathering

chemical wethering

biological weathering

Earth is a common habitat of all living beings. Explain in 1 paragraph.

➪ Earth is a common habitat, this means that earth is the only place where all organisms live together. All the living beings live on the same planet i.e. Earth.. From the smallest organism Bacteria to Largest organism Armillaria ostoyae. Habitat word means conditions suitable for an organism or population of organisms to live. and the habitat of earth is the common place for all loving organisms because it has all requirements of life like Oxygen, water, natural food sources etc.. These are the reasons why Earth is a common habitat of all living beings.

That's 1 paragraph!! Hope it helps ~

The solution for X on a triangle labeled JKL is 36.

Based on your description, we have a triangle JKL with side lengths JK = 56, KL = 2x - 4, and JL = 16. Also, angle J = 7° and angle L = 8°.

Since the sum of all angles in a triangle is always 180°, we can first find angle K:

Angle K = 180° - (angle J + angle L) = 180° - (7° + 8°) = 180° - 15° = 165°

Now, we can use the Law of Cosines to solve for x:

JL² = JK² + KL² - 2(JK)(KL)cos(K)
16² = 56² + (2x - 4)² - 2(56)(2x - 4)cos(165°)
256 = 3136 + 4x² - 16x + 16 - 112x + 224*cos(165°)

Rearrange and simplify:

4x² - 128x + 2096 - 224*cos(165°) = 0

Since cos(165°) = -cos(15°) ≈ -0.9659, we have:

4x² - 128x + 2096 + 216.5 ≈ 0

Now you can solve the quadratic equation for x using the quadratic formula, factoring, or numerical methods. Once you find x, you can calculate the side length KL using the expression 2x - 4:

4x² - 128x + 2312.5 ≈ 0

We can now use the quadratic formula:

\(x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\)

where a = 4, b = -128, and c = 2312.5.

Plugging in these values, we get:

\(x = \frac{-(-128) \pm \sqrt{(-128)^2 - 4(4)(2312.5)}}{2\cdot 4}\)

\(x = \frac{128 \pm \sqrt{128^2 - 4(4)(2312.5)}}{8}\)

\(x = \frac{128 \pm \sqrt{100096}}{8}\)

\(x = \frac{128 \pm 316}{8}\)

x = 36 or x = -7

Since we're looking for a positive value of x, the solution is x = 36.

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Part AKepler's third law states that the square of the period of revolution of a planet around its star is proportional to the cube of its semimajor axis.

Therefore, P² = a³ where P is the period and a is the semimajor axis.The mass of the planet is estimated to be 0.6 times the mass of Jupiter which is about 1.89 × 10²⁷ kg. Using Kepler's third law, the semimajor axis of the planet is;a³ = P²a = (P²)¹/³ = [(4.23 days)²]¹/³ = 5.12×10−2 AUThe average distance of the planet from its star is 5.12×10−2 AU.Part BThe planet reflects 15% of the incoming sunlight.

The "no greenhouse" average temperature of the planet is given by;T = [(1 - A)S/4σ]¹/⁴where A is the albedo of the planet (fraction of incoming radiation that it reflects), S is the solar constant (amount of radiation per unit area that falls on a surface perpendicular to the Sun's rays at Earth's mean distance from the Sun), and σ is the Stefan-Boltzmann constant (5.67 × 10⁻⁸ W/m²K⁴).

Substituting the given values, we get;T = [(1 - 0.15)(1361 W/m²)/4(5.67 × 10⁻⁸ W/m²K⁴)]¹/⁴ = 977 KThe "no greenhouse" average temperature of the planet is 977 K (kelvins).Comparing with Earth's temperature of 288 K (kelvins), the planet's temperature is significantly higher.

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Compressional stress plays a major role in regional metamorphism.

Regional metamorphism occurs over large areas and is associated with tectonic processes such as mountain building or collision of tectonic plates. During regional metamorphism, rocks are subjected to intense pressure and heat, often due to the forces of compressional stress. Compressional stress results from the convergent movement of tectonic plates, causing rocks to be squeezed and deformed.

The pressure generated by this stress can cause the recrystallization of minerals and the formation of new minerals, leading to changes in the texture, structure, and composition of the rocks. This process can result in the development of foliation (layering) and the formation of high-grade metamorphic rocks, such as gneiss and schist.

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Answer: It would take you about 19 years to reach the Sun.

Explanation: Sun is about 8.3 light minutes from the Earth. This means it would take 8.3 minutes for light to reach from the Surface of the Sun to reach the Earth. If you are traveling in a Jumbo Jet , it would take you about 19 years to reach the Sun

The central role of unavailable freshwater locked up in ice is that it greatly affects global climate patterns, sea levels, and the availability of freshwater resources for human and ecosystem use.

About 69% of the Earth's freshwater is locked up in glaciers, ice caps, and ice sheets, mostly located in Antarctica and Greenland. As global temperatures rise due to climate change, the melting of these ice formations contributes to rising sea levels, which can lead to flooding and the displacement of coastal communities.

Additionally, changes in the amount of freshwater stored in ice can affect ocean currents and weather patterns, which in turn can impact ecosystems and human societies around the world.

The availability of freshwater resources for human consumption and agricultural production is also impacted by the amount of water locked up in ice, as melting ice can contribute to both increased water supply and changes in water quality.

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Unlike the skeptic, the scientist is presenting data on climate patterns, which provide a much bigger picture of how climate has changed over longer time frames and on a global scale.

Based on the graph, the scientist provides evidence that global warming is occurring because global surface temperatures have been increasing for the past few decades, with 2010 temperatures averaging at least 0.4°C (0.72° F) higher than normal levels.
(1) climate; (2) global; (3) 0.4°C (0.72° F) higher

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Answer:

The Aztec, Maya, and Inca all farmed but had different techniques. The Aztecs built floating gardens while the Maya burnt down forests to plant gardens and the Inca farmed steep areas by building terraces. All three civilizations grew corn, beans, and squash.

Answer:

Answer:

The Changbai Mountains

Explanation:

google

The primary difference between a tropical disturbance and a tropical depression lies in their level of organization and wind speeds.

A tropical disturbance is a loosely organized weather system with a defined area of low pressure. It is characterized by disorganized thunderstorm activity and lacks a well-defined circulation pattern. Tropical disturbances have the potential to develop into more organized tropical weather systems under favorable conditions. On the other hand, a tropical depression is a more organized and stronger weather system compared to a tropical disturbance. It exhibits a closed circulation with sustained winds ranging from 23 to 39 miles per hour (37 to 63 kilometers per hour). Tropical depressions are assigned a number by meteorological agencies to track their development and movement.

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Answer:

The thermohaline circulation is mainly driven by the formation of deep water masses in the North Atlantic and the Southern Ocean caused by differences in temperature and salinity of the water.

Explanation:

Answer:

D. it created spanish-speaking and Portuguese-speaking regions.

Explanation: I am pretty sure this is correct i hope this helps!

Answer:

1- a

2- c

3- b

4- a

Explanation:

the spreading rate on transect D is 1.42 km/million years or 14,200 cm/year. The lines drawn on transect D show the symmetrical pattern of magnetic anomalies on either side of the Mid-Atlantic Ridge.

The pattern shows that the sea floor is spreading and new crust is forming at the center of the ridge. As magma rises to the surface, it cools and solidifies to form new crust. The magnetic anomalies are a result of the Earth's magnetic field changing over time, and are recorded in the rocks that form the sea floor. The alternating magnetic polarity bands on either side of the ridge are evidence of sea floor spreading.

The symmetrical pattern of magnetic anomalies observed on transect D supports the idea of seafloor spreading. The pattern is caused by the alternating polarity of the Earth's magnetic field, which is recorded in the rocks that form the sea floor. As magma rises to the surface at the center of the Mid-Atlantic Ridge, it cools and solidifies to form new crust. The magnetic field is frozen into the rock, and as the sea floor spreads, new rock is formed with a different polarity. This creates a pattern of alternating magnetic anomalies on either side of the ridge, with bands of normal and reversed polarity.

To calculate the spreading rate using transect D, we need to find the distance between peak 4 and the center of the ridge, and divide it by the age difference between them. The distance between peak 4 and the center of the ridge is 2.5 km on each side, for a total distance of 5 km. The age difference between peak 4 and the center of the ridge is 7.0 million years. Therefore, the half-spreading rate on each side of the ridge is:

5 km / 7.0 million years = 0.71 km/million years

To get the full-spreading rate, we add the two half-spreading rates together:

0.71 km/million years + 0.71 km/million years = 1.42 km/million years

To convert to cm/year, we multiply by 10,000:

1.42 km/million years x 10,000 = 14,200 cm/year

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Coal is a combustible dark brown or black rock that is primarily made up of carbonized plant materials and is used as a fuel. It is found primarily in underground seams.

Strip the type of coal mine that describes the revelation of coal.

As a result, the Strip coal mine is described in this way.

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The visitor should run a distance of 7.9 miles from the cabin to minimize the time it takes to reach the island.

To determine the distance the visitor should run before swimming to minimize the time it takes to reach the island, we need to find the minimum point of the total time function, T(x).

Given:

Distance from the point on the shore closest to the island to the cabin = 7.9 mi

Distance from the island to the point at which the visitor begins swimming = y

Running speed of the visitor = 5 mph

Swimming speed of the visitor = 1 mph

Let's derive the total time function:

T(x) = T_r + T_s

To find T_r, we divide the distance to be covered by running (x) by the running speed:

T_r = x / 5

To find T_s, we divide the distance to be covered by swimming (y) by the swimming speed:

T_s = y / 1 = y

Substituting these values into the total time function:

T(x) = (x / 5) + y

We know that the distance from the cabin to the island is the sum of the distances covered by running and swimming:

x + y = 2.1

Rearranging the equation, we get:

y = 2.1 - x

Substituting this value of y into the total time function:

T(x) = (x / 5) + (2.1 - x)

Simplifying the equation:

T(x) = (x / 5) + 2.1 - x

To minimize the time, we differentiate T(x) with respect to x and set it equal to zero:

d(T(x)) / dx = (1 / 5) - 1 = 0

1 / 5 - 1 = 0

-4 / 5 = 0

Since -4 / 5 is not equal to zero, there is no critical point. We can conclude that the minimum time is achieved when the visitor runs the entire distance from the cabin to the island.

Therefore, the visitor should run a distance of 7.9 miles from the cabin to minimize the time it takes to reach the island.

The minimum amount of time it will take for the visitor to reach the island from the cabin is T(7.9) = (7.9 / 5) + 2.1 - 7.9 = 1.58 + 2.1 - 7.9 = 0.78 hours (or approximately 46.8 minutes).

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Answer:

25 rounds to 30 and 24 rounds to 20

Answer:

answer is 7

Explanation: