Answer: Physical change.
Explanation: A physical change is one where the chemical formula of a substance is not changed. Steam is H2O and so is room temperature water.
A good example of a physical change is ripping a piece of paper in half. The shape of the piece of paper has changed, but it's chemical makeup has stayed the same.
A good example of a chemical change is burning a piece of paper. The paper has now turned to ash, which is a different chemical substance than paper.
Note: It is important to remember, nothing new is created and nothing is ever destroyed! In all chemical reactions, the same amount of atoms of each element comes out at the end of the reaction. The elements themselves are not changed however the way they are arranged is.
Answer:
By 1900 the American nation had established itself as a world power. The West was won. The frontier -- the great fact of 300 years of American history -- was no more. The continent was settled from coast to coast. Apache war chief Geronimo had surrendered in 1886. Defeat of the Sioux at the battle of Wounded Knee in 1891 had brought the Indian Wars to a close. By 1900 the Indians were on reservations and the buffalo were gone. Homesteading and the introduction of barbed wire in 1874 had brought an end to the open range. The McCormick reaper had made large-scale farming profitable and, in 1900, the U.S. was by far the world's largest agricultural producer. The first transcontinental rail link had been completed in 1869. Three decades later, in 1900, the nation had 193,000 miles of track, with five railroad systems spanning the continent
Answer:
Yes, it helped. Thank you.
Answer:
1- Option (C)
2- Option (A)
3- Option (B)
Explanation:
The warm ocean currents are responsible for the transportation of warm and moist air to the coastal region, whereas the cold ocean currents are responsible for carrying the cold and dry air to the nearby coastal areas.
Therefore, the region (1) will experience a cold and dry type of weather.
The stratosphere is the layer that is just above the troposphere and extends from a height of about 10 to 50 km above the ground surface. Here the temperature increases with the increasing height due to the presence of Ozone layer (O₃) that absorbs the incoming solar radiations.
Troposphere is the interior layer of the atmosphere that extends from the ground surface up to a height of about 10 km. Here, the temperature decreases with the increasing altitude. The air near the ground surface is compact and dense, due to which the temperature remains high. As the warm air rises up it interacts with the cold air that is situated over the warm air. Due to this, the air cools down and sinks to the bottom.
Hence, the correct answers are mentioned above.
Answer:
En las regiones con clima frío se desarrollan otro tipo de actividades económicas, como la explotación forestal. Sin embargo, no solo se trata de las actividades económicas relacionadas a la producción de alimentos o la extracción de materias primas, también otras, como el turismo, están relacionadas con el clima.
Explanation:Calidad 4k la imagen