Question

Hey guys can some one pl give important one markers in class 10 chem
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Answer 1

Answer:

Hiii

Good morning

The summer solstice occurs when the sun reaches its highest point in the Northern Hemisphere. ... On the other hand, the winter solstice falls between 21 and 22 December every year. During the summer solstice, all days are longer than 12 hours and in the winter solstice, all days are shorter than 12 hours

Explanation:

Planes, Trains and Automobiles:

Before every other form of transportation, humans traveled on foot. Can you imagine walking from New York City to Los Angeles? Fortunately, human beings learned to use animals such as donkeys, horses and camels for transportation from 4000 BC to 3000 BC. In 3500 BC, the wheel was invented in Iraq and the first wheel was made from wood. Initially, a canoe-like structure was used for water transportation, which was built by burning logs and digging out the burned wood. In 3100BC, the sailing boat was invented by Egyptians while the Romans built roads across Europe. During the Industrial Revolution, the first modern highway was developed by John Loudon McAdam.

In the 17th and 18th century, many new modes of transportation were invented such as bicycles, trains, motor cars, trucks, airplanes, and trams. In 1906, the first car was developed with an internal combustion engine. Many types of transportation systems such as boats, trains, airplanes, and automobiles were based on the internal combustion engine.

The three leading automobile companies in the US in the 1920s were General Motors, Chrysler, and Ford. Furthermore, several styles of automobiles were produced such as the two doors, small, large, sports cars, and luxury cars. Presently, the latest car models have integrated improved standardization, computer aided systems, and platform sharing. The modern railroad system uses remote control for traffic lights and movement of traffic, capable of speeds of more than 570 km/hr.