who was Eratosthenes? what did he contribute to geography?​

The values of B and C in the triangle are 40° and 55° respectively.

It should be noted that the value of the total angles on a triangle is 180°. In this case, the angles are given as:

A = 85

B = 3x - 20

C = 2x + 15

This will be illustrated as:

85 + 3x - 20 + 2x + 15 = 180

Collect like terms

80 + 5x = 180

5x = 180 - 80

5x = 100

Divide

x = 100 / 5

x = 20

Therefore B will be:

= 3(20) - 20

= 40°

C = 2x + 15

C = 2(20) + 15

C = 40 + 15

C = 55°

This illustrates the angles in the triangle.

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The possible length for the third side of triangle x = 72. with the possible range of side .

Le-the third side be X.

We know that the sum of 2 sides of a triangle must be greater than the third side.

So we can get.

x + 26 > 46 - 1

26 + 46 > x ---------- (2)

and

From => x+26  = 46

=> x> 46-26

⇒ x > 20 ---------- (3 )

From ⇒ 26 + 46 >x

⇒ 72>x

⇒ x < 72

From (3) and( 4) equation we get → 20 < x <72

A triangle is a polygon with three sides and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is represented by equilateral triangle. A triangle is a polygon with three sides and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is represented by triangle ABC. In Euclidean geometry, a unique triangle as well as a unique plane are determined when the three points are not collinear.

Each polygon has a special name based on the number of sides. For example, "tri" is a prefix meaning "three", so a three-sided polygon is called a triangle. Its name also indicates that this polygon has three angles. The prefix "poly" means many.

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Option C. Sediment is not being deposited anywhere, so everywhere is eroding, The bottom of waterfalls, riverbanks, and deltas are frequent places for silt to collect.

Since sediment is not being deposited somewhere, erosion is occurring everywhere. The rest of the lands of Pensylvania are eroding as a result of silt accumulation in some man-made lakes, natural lakes, caves, and marshes. As the ice sculpts the terrain or melts, glaciers may freeze sediment and then dump it elsewhere. Sediment generated and deposited by glaciers is termed moraine. In dust or sandstorms, wind can blow dirt across a plain.

What is accurate about the land surface today, that you can observe in places such as Pennsylvania?

A) Sediment is not being deposited anywhere, and it never has been.

B) Sediment is being deposited in most places, but a few places are eroding.

C) Sediment is not being deposited anywhere, so everywhere is eroding.

D) Sediment is being deposited in a few places, but most places are eroding.

E) Sediment is being deposited everywhere, covering the land surface deeper and deeper

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Answer:

rise and fall of tides

Explanation:

rise and fall of tides

the world in spatial terms, places and regions, physical systems, human systems, environment and society, and the uses of geography.

The six components—the world in geographical terms, locations and regions, physical systems, human systems, environment and society, and the uses of geography—organize the eighteen national standards. These components aid in our comprehension of how the world's locations and people are related. Things go from one location to another through movement. (This includes the movement of people, products, ideas, and/or beliefs.) explains how humanity has altered our globe. The study of human geography examines the patterns and processes that influence how people interact with their surroundings on a political, cultural, economic, and social level. The study of national borders or the placement of religious communities are a few of instances of this.

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Answer:

1. The type of rock

2. The conditions of the environment

3. The presence of living organisms

4. The duration of the change

Explanation:

To determine what causes a rock to change into another type, there are several variables that would need to be investigated. These variables could include:

The type of rock: Different types of rocks have different compositions and structures, and they are more or less susceptible to certain types of changes. For example, some rocks, such as granite, are more resistant to weathering and erosion, while others, such as shale, are more easily altered.

The conditions of the environment: The forces of nature, such as heat, pressure, and the action of water and air, can all affect the stability of rocks and cause them to change over time. The specific conditions of the environment, such as the temperature, the pressure, and the presence of water or other chemicals, can all play a role in determining how a rock will change.

The presence of living organisms: The activities of plants, animals, and other living organisms can also affect the stability of rocks and cause them to change over time. For example, the roots of plants can exert pressure on rocks and cause them to crack or break, and the burrowing of animals can create spaces within the rock that allow water and other substances to enter and alter its composition.

The duration of the change: The length of time over which a rock is subjected to changing conditions can also play a role in determining how it will change.

The correct answer is  c. tornado type of cyclone is the largest in size.

The multiple vortex tornado, landspout, and waterspout are a few examples of different types of tornadoes. A massive cumulus or cumulonimbus cloud connected to a spiralling funnel-shaped wind current is what gives rise to a waterspout. People are exposed to risks from extremely strong winds and run the chance of being hit by flying and falling debris during a tornado. The destruction left behind by a tornado increases the chance of harm. While there is nothing you can do to stop tornadoes, there are things you can do to safeguard your safety and health.With the exception of the United States, Canada most likely experiences the most tornadoes. The most often hit regions include portions of the southern Prairies and southwestern Ontario.

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Answer:

True

Explanation:

True. The presence of meltwater at the bottom of a glacier can increase its rate of movement, also known as its "flow velocity." When water collects at the base of a glacier, it can act as a lubricant, allowing the glacier to move more easily over the underlying land. This can cause the glacier to flow more quickly and potentially to advance or retreat more rapidly than it otherwise would. The amount of meltwater present at the base of a glacier can vary depending on factors such as the temperature and the amount of snow and ice present, and can have a significant impact on the glacier's movement and overall behavior.

Answer: A cooling climate in northern Europe.

Explanation: Hope it helps: )

Our planet stays quite close to the same distance from the sun throughout the year thanks to the Earth's hardly elliptical orbit. In fact, during the summer in the Northern Hemisphere, Earth is a little further away from the sun.

The hemisphere that is inclined toward the sun, whether it be the Northern or Southern Hemisphere, receives more direct sunlight. Additionally, the hemisphere slanted toward the sun has more daylight hours than the hemisphere tilted away from it. Hence, the daytime increases.

The hemisphere tilted toward the sun receives more solar radiation and experiences greater temperatures as a result of more hours of daylight and direct sunshine. Summer is experienced between the equator and 90°N (the North Pole) latitudes when the Northern Hemisphere is turned toward the sun.

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The current definition, published in 2012 and based on the 2010 decennial census, states that rural regions are made up of open land and communities with fewer than 2,500 inhabitants. Larger places and the densely populated areas around them make up urban areas. Municipal boundaries are not often followed in urban areas.

In comparison to metropolitan areas, rural areas have a lower population density. Land is not scarce in rural places. Urban locations have very high pollution levels because of the dense population, automobiles, and industries there. The majority of jobs are in agricultural pursuits.

Compared to city dwellers, rural residents commit more crimes in the name of love. Surprisingly, from 2008 to 2011, romance was a factor in more than 50% of homicides in rural China.

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By removing only the upper portion of the structure that is floating on water, oil companies can convert the rigs into reefs instead of removing the oil and gas platforms.

The industry is able to save millions of dollars annually because reefing is less expensive than the entire process of removing rigs.

The Benefits and Drawbacks of Working on an Offshore Oil Rig Excellent Salary Structure...

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Basalt is a fine-grained mafic igneous rock. It is commonly vesicular and aphanitic.

The pace at which the melt cools determines whether an igneous rock has a fine- or coarse-grained texture: slow cooling allows for the formation of massive crystals, whereas quick cooling results in microscopic crystals. Based on their chemical makeup, igneous rocks may be categorised into four groups: felsic, intermediate, mafic, and ultramafic. Figure 7.6's representation of Bowen's reaction series demonstrates how variations in an igneous rock's chemical composition correspond to variations in its mineral content. Since the crystals are too tiny to view without a magnifying glass, igneous rocks that are formed on the surface of the earth have a highly fine-grained structure.

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Volume of sphere is V = (4/3)πr3

Area of the sphere is A = 4πr2.

where r= radius of the sphere

The question is incomplete that is the answer provide is of the question how to find surface area from volume:

The formula for surface area of a sphere is given by SA= 4/3π(r^2) (let us assume this as step 1), while its volume (V) is equal to (4/3)π(r^3) where "r" is the radius of the sphere.

To calculate the surface area for a sphere with a volume of 4.5π cubic meters where π= 3.14 approximately.

Step 2: The radius of the sphere by substituting 4.5π ft^3 for V in the formula in Step 1 to get:

V=4.5π cubic feet.= (4/3)π(r^3)

Step 3: Multiply each side of the equation by 3 and the equation becomes: 13.5π cubic feet =4π(r^3)

Step 4 : Divide both sides of the equation by 4π. Solve for the radius of the sphere.

To get:

(13.5π cubic feet)/(4π) = (4π )(r^3)/ (4π),

which then becomes: 3.38 cubic feet= (r^3)

Step 5: After calculating the value of "r" is 1.50ft

Therefore, putting the value of r in step 1; we get

SA = 4π(1.50^2) = 4π(1.50X1.50) is equal to 9π square ft.

The question is incomplete that is the answer provide is of the question how to find surface area from volume.

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Option C. Leachate, Being more visible, Groundwater vapour rises in the atmosphere and cools. Tiny droplets are formed once it further condenses.

Evaporation is the process by which water transforms into vapour. Groundwater in a certain location is considered potable water. The three forms of water that are circulated in the water cycle are solid, liquid, and gaseous. Ice, the solid form of water, is found in glaciers, snow-covered mountains, and the poles of the earth. Rivers, lakes, seas, and oceans all contain the liquid form of the substance. Water vapour, which is water in a gaseous state, is all around us.

which term refers to the liquid that forms when rainwater or groundwater mixes with decomposing waste at the dump?

A. e- waste

B. waste stream

C. Leachate

D. Sewage sludge

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Option A is correct. Ice age is another name for the Pleistocene epoch. There are numerous accounts of events that followed that contributed to global warming.

One of these is true: the globe began warming 18,000 years ago when it began to emerge from the Pleistocene Ice Age. Despite the fact that sea levels have risen by roughly 300 feet, forests have also returned. Some animal species, like mammoths and mastodons, went extinct. These were the Pleistocene epochs: A geological age known as the Gelasian is thought to have started around 2,588 million years ago and ended about 1,806 years ago.

Which of the following is not correct regarding the Pleistocene?

A) Sea levels were 100 m (330 ft.) higher than today.

B) At its height almost a third of Earth was covered with ice.

C) It began 1.65 mya and had at least 18 glacial/interglacial cycles.

D) The Ohio and Missouri River systems marked the southern terminus of continuous ice at its greatest extent.

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Vegetation's spectral characteristics. Chlorophyll regulates the spectral characteristics of vegetation in the visible region of the spectrum.

In vegetation, the reflectance spectrum in the visible area is dominated by light absorption by leaf pigments (400–700 nm). Red and blue (400–500 nm) wavelengths are preferentially absorbed by chlorophyll pigments a and b. Chlorophyll is the photosynthetic component that enables plants to produce carbohydrates by photosynthesis from carbon dioxide and water.

The spectral reflectance of bare soil doesn't vary significantly with wavelength. The slope is influenced by the kind of soil and the amount of surface moisture, and the reflectance increases linearly with wavelength.

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Answer: China Pekin

Explanation:

Answer:

B. Factors of Gross National Products

Explanation:

I did an elimination strategy on this one. Here's my logic:

For A, GDPPC cannot be considered a "key socio-economic indicator", because everybody in a country, no matter their socioeconomic status, has the same GDPPC obviously.

For C, GDPPC isn't considered physical... I think?

For D, It's not political and it's not strictly in the US

Answer:

The capital of France is Paris

Answer:

The polar air mass and the Gulf of Mexico air mass

Explanation:

The two air masses that have the greatest influence on the weather east of the Rocky Mountains in North America are the polar air mass and the warm, moist air mass from the Gulf of Mexico. The polar air mass is typically cold and dry, and can bring cold temperatures and clear skies to the region. The warm, moist air mass from the Gulf of Mexico is typically warmer and more humid, and can bring mild temperatures and precipitation to the region. These two air masses can interact and combine to produce a variety of weather conditions, including snowstorms, thunderstorms, and tornadoes. The specific type of weather that occurs in a given location can depend on a number of factors, including the time of year and the location's geography.

Answer: B Convection currents

Explanation:

The Earth’s tectonic plates are constantly moving like giant ‘rafts’ on top of the semi-molten mantle below. However, this movement is slow and rates vary from less than 2.5cm /yr to over 15cm/yr. One explanation for the movement of the Earth’s crustal plates is believed to be convection currents which occur in the semi-molten mantle.

The statement, "Romans planted grapes on hillsides so that the ripe grapes would role down to the valley floor, which facilitated easy collection and processing." is true.

The Middle East is typically referred to be the grape's native land, and grape cultivation there has existed for 6,000–8,000 years. One of the earliest domesticated bacteria, yeast, is naturally present in the skin of grapes, which is how alcoholic drinks like wine were first discovered. There is 8,000-year-old archaeological evidence from Georgia demonstrating the importance of winemaking to human history.

The world's oldest winery, which goes back to around 4000 BC, is located in Armenia. By the ninth century AD, Shiraz was well known for producing some of the greatest wines in the Middle East. Therefore, it has been proposed that the name of the Syrah red wine was inspired by Shiraz, a city in Persia.

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Answer:

Both nations are experiencing lower birth rates.

Speciation can occur when two populations of species become separated from each other. Thus, the given statement is true.

When a group within a species splits from other members of its species and develops its own distinct features, speciation has taken place. The requirements of a new habitat or the traits of the new group's members will set the new species apart from its forebears.

The main contention is that groups will diverge from one another when they are geographically isolated, both in terms of physical appearance and genetic makeup. Reproductive isolation results from these alterations, which might be brought on by genetic drift or natural selection.

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The effect of continued destruction of this rain forest is that there are increased storage of carbon which are released into the atmosphere as carbon dioxide (CO2, thus, this is how deforestation and forest degradation contribute to global warming.

The Amazon Rainforest is a large tropical rainforest in northern South America that occupies the drainage basin of the Amazon River and its tributaries and covers an area of 2,300,000 square miles (6,000,000 square km).

It is bounded to the north by the Guiana Highlands, to the west by the Andes Mountains, to the south by the Brazilian central plateau, and to the east by the Atlantic Ocean.

The Amazon River Basin is home to the world's largest rainforest. The basin, which is roughly the size of the 48 contiguous United States, covers roughly 40% of the South American continent and includes parts of eight South American countries.

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Answer:

True

Explanation:

That is true

Answer:

small and centralized. it is easily to manage since the government is close to all portions of the state. the state gets easy access to the coast and the local resources around it.

The landform F, given the topographic map of Southern Africa, is C. the island of Madagascar

Madagascar is an island nation off of Africa's southeast coast. After Greenland, New Guinea, and Borneo, Madagascar is the fourth-largest island in the world by area.

The majority of the population of Madagascar is linked to Indonesians, who are located more than 3,000 miles (4,800 km) to the east.

The landform labelled F, is said to be an island in the Indian Ocean. As mentioned above, Madagascar is an island located in the Indian Ocean, to the east of Southern Africa.

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