Most of the Earth's water is found in the oceans, which constitute about 97% of the total water on the planet. Only about 3% of Earth's water is freshwater, and of this freshwater, approximately 69% is locked up in ice caps and glaciers, 30% is groundwater, and less than 1% is surface water found in lakes, rivers, and wetlands. A very small fraction of freshwater is also present in the atmosphere and biosphere.
The distribution of water on Earth is often referred to as the hydrologic cycle, which describes the continuous movement of water above, on, and below the surface of the Earth. The vast majority of water on Earth is saline, located in the oceans and seas. Freshwater, which is essential for human consumption, agriculture, and ecosystems, is much less abundant.
Here is a breakdown of Earth's water distribution:
- Oceans and Seas (Saline Water): About 1,335,000,000 cubic kilometers (km³), which is roughly 96.5% of all Earth's water.
- Ice Caps and Glaciers (Freshwater): Approximately 24,064,000 km³, or about 68.7% of freshwater.
- Groundwater (Freshwater): Estimated at around 10,530,000 km³, or about 30.1% of freshwater.
- Lakes (Freshwater): About 176,400 km³, which is 0.44% of freshwater.
- Atmosphere (Freshwater): Contains around 12,900 km³ of water at any given time, which is 0.037% of freshwater.
- Swamp Water (Freshwater): Estimated at about 11,470 km³, or 0.031% of freshwater.
- Rivers (Freshwater): Hold approximately 2,120 km³, which is about 0.006% of freshwater.
- Biosphere (Freshwater): The total amount of water in the biosphere is not well quantified but is a very small fraction of freshwater.
It is important to note that while groundwater constitutes a significant portion of freshwater, much of it is not accessible for human use due to depth and location. Additionally, the accessible groundwater is a renewable resource, recharged by precipitation that infiltrates the ground, minus the water that is evaporated, transpired by plants, or discharged to the oceans.
Which statement about a nonpartisan election is true? A. Successful candidates must be identified by party. B. Most school and city officers are chosen in this way. C. Successful candidates must be nominated by a major party. D. Most state senators are chosen in this way
Nonpartisanism is a lack of affiliation with or bias toward a political party. Therefore, the statement that is true about a nonpartisan election is -- B. Most school and city officers are chosen in this way. These organizations claim to be nonpartisan but they also follow the policies of a political party.
Most school and city officers are chosen in this way. - GradPoint Answer
A ____ represents a three dimensional figure with three separate views such as the top view front view and right side view
•net
•orthographic drawing
•isometric drawing
•geometric solid
according to census 2000 more than one-third of the foreign born population lived in which region ?
a.)South
b.)West
c.)Midwest
A sheltered body of water next to the shore is called a _______________.
What African city sits at about 5 degrees north, 31 degrees east?
why do astronomers find it difficult to locate extra-solar planets with telescopes
Answer:
About 300 planets have been located around stars other than the Sun, but this is usually by indirect measurements, such as the change in their passage over their stars' gravitational field, distorting the surrounding light.
All the extrasolar planets detected so far were a hesitation on a chart, because most of them don't reflect any luminosity.
Sedimentary rocks are more a product of the _________ system whereas metamorphic and igneous rocks are more a product of the __________ system.
Explanation:
exogenic and ensogenic
PLEASE PLEASE HELP!
All of the following are names for canyons except
Select one:
a. ravines
b. gorges
c. chasms
d. lowlands
Final answer:
The term that does not refer to a canyon is 'lowlands'. While ravines, gorges, and chasms are all types of canyons or canyon-like structures, lowlands are flat or gently rolling terrain without steep sides or significant depth. So the correct option is d.
Explanation:
All of the following are names for canyons except lowlands. Here's why:
Ravines: These are small to medium-sized canyons typically carved by running water and are narrow and steep-sided.Gorges: Similar to ravines, gorges are typically deeper and more narrow canyons, often with a river flowing through them.Chasms: These are very deep, narrow openings in the earth's surface, and they can be similar to canyons but are often more dramatic in depth compared to their width.Lowlands: This term refers to areas of land that are low in elevation compared to surrounding areas, which does not describe a canyon. Lowlands are the opposite of highlands and do not have steep sides or a significant depth that characterizes canyons.Canyons are known for having been formed by the process of erosion over millions of years. The Valles Marineris on Mars, though often referred to as a series of canyons, was primarily formed due to tectonic cracks rather than erosion by water. However, water played a later role in shaping these canyons. Other processes like wind erosion also continue to shape existing canyons on Earth. These terms describe various types of steep-sided valleys, which are often associated with rivers or ancient water flow, unlike lowlands that represent flat or gently rolling terrain.
Which type of sedimentary rock is formed from the remains of animals and plants?
Mafic
Organic
Chemical
Clastic
Which type of rock tends to have ripple marks, mud cracks, and layers (strata)?
Question 1 options:
Extrusive igneous rocks
Sedimentary Rocks
Intrusive igneous rocks
Metamorphic Rocks
Answer:
A) sedimentary rocks have
Germany has access to markets for its goods because of its _____.
A) control of formerly Communist areas
B) natural resources
C) membership in the European Union
D) early industrial development
The Answer is:
C) Membership in the European Union
What is the purpose of the SMCRA and what requirements does it dictate?
Answer:
The SMCRA is a federal law that controls how much the coal mining companies can pollute the environment. The Surface Mining Control and Reclamation Act regulates how old mines are reclaimed in addition to controlling how new coal mines are opened and how they operate.
Explanation:
What determines the size of a mineral crystal formed from magma?
The size of a mineral crystal formed from magma is determined by the rate of the magma's cooling and the concentration of specific elements or compounds in the magma.
Explanation:The size of a mineral crystal formed from magma is determined primarily by two factors: the rate at which the magma cools, and the amount of specific elements present in the magma. A slower cooling rate generally allows larger crystals to form, as the conditions conducive to crystal growth last for a longer period of time. On the other hand, a rapid cooling rate limits the growth of crystals, causing them to be smaller. Moreover, the presence of specific elements or compounds can also influence the size of the crystals. For instance, a magma with a high concentration of silica is more likely to form larger quartz crystals.
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which group of american people would benefit the most if illegal immigration did not exist in the U. S.?
a. elders
b. high school drop-outs
c. big business entrepreneurs
d. people working in the medical field
One of the Germanic tribes was the Vandals.
TrueFalse
Which new york state city is located at 42°39' n 73°45' w?
The answer is Albany.
Albany is the capital city of New York State. Its latitude is 42°39' N (north) and 73°45' W (west) longitude. The city of Albany is situated on the west bank of the Hudson River. This city is famous for its rich history, culture, architecture, and higher education institutions. The famous Institute ‘Hudson River School paintings’ adding fame to Albany.
1) The Great Lakes are ____of the Rocky Mountains
a) northeast
b) southeast
c) west
d) north
2)The Appalachian Mountains are______ of the Rocky Mountains
a) north
b) south
c) east
d) west
In the diagram which layer of rock is the oldest
Answer: the answer is f
Explanation:
how does atmospheric pressure distribute energy around the globe?
Commercial agriculture consist of raising food for trade and profit, while subsistence agriculture focuses on??
Answer: Crop Production and Storage.
Explanation: Commercial agriculture consists of raising food for trade and profits, while subsistence agriculture focuses on crop production and storage, by farmers, who use it for their subsistence. This type of cultural activity is carried out in order to collect the greatest amount of crops for it to last, taking into account that there are availability of such important elements as the tools and the optimization of the soil they use, since unfortunately only harvest is produced once a year.
Select all that appy
Select the important rivers of the Northeast.
Hudson
Colorado
Mohawk
Rio Grande
Snake
Susquehanna
Pawcatuck
The important rivers of the Northeast are Hudson, Mohawk, Susquehanna, and Pawcatuck. Therefore, Options (A), (C ), (F), and (H) are the correct answers.
What is the significance of the Hudson river?
The Hudson River flows through New York for 315 miles (507 kilometers). The river was discovered in 1609 by an Englishman working for the Dutch East India Company named Henry Hudson, after whom Canada's Hudson Bay is also titled.
Native Americans lived in the Hudson River region long before European settlers did. The Lenape (also known as the Delaware Indians), the Wappingers, and the Mahicans were the three subgroups of the Algonquins, who resided along the river.
All throughout the colonization of the United States, the Hudson was frequently used for travel. The Hudson was a significant trade and transport route, although is smaller than several other American rivers. The Hudson River valley, which is adjacent to settlements in New York, was used during the Revolutionary War in the 1750s.
Hence, Options (A), (C ), (F), and (H) are the right choices.
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Is lake ontario the closest to great lake to ottawa and canada?
No, Lake Ontario is not the closest Great Lake to Ottawa, Canada. The closest Great Lake to Ottawa is Lake Ontario's neighbor to the west, which is Lake Huron.
Lake Huron is the closest Great Lake to Ottawa, Canada, although it is not directly adjacent to the city. Lake Huron is located to the northwest of Ottawa, with a distance of approximately 300 kilometers (186 miles) from the city.
In contrast, Lake Ontario, which is the easternmost Great Lake and directly south of Ottawa, is farther away, with a distance of over 400 kilometers (about 250 miles).
While both lakes are part of the Great Lakes system and provide significant water resources and recreational opportunities for the region, Lake Huron is geographically closer to Ottawa than Lake Ontario.
Harnessing the sun’s energy to produce heat or electricity is what?
A.a major source of air pollution
B.nonpolluting
C.inexpensive
D.possible only in coastal areas
All of the following are examples of benefits that people receive by altering the Earth’s environmental spheres, except __________.
A. the burning of fossil fuels to produce electricity
B. the terracing of a hillside
C. eutrophication
D. the construction of a home
Answer: letter c
Explanation:
What is a half-life?
Question 2 options:
Half the time it takes for an organism to become extinct
The spontaneous breakdown of atomic nuclei
The time it takes for half a radioactive sample to decay
Atoms of the same element with a different number of neutrons
it is the time taken for the radioactivity of a specified isotope to fall to half its original value.
was it worth it? XD
The doldrums and the horse latitudes are both regions of
of the three landform regions in Central America, which has both a springlike climate and a cold climate
A mountainous core
B Pacific coastal plains
C Caribbean lowlands
!!!!!!!ITS A!!!!!!!
Which US region has a population that is most likely to be dominated by people of Irish, Italian, Puerto Rican, and African American backgrounds?
what language is killing siberian?
The Byzantine Empire fell in 1543.
TrueFalse