Their polarity can be reversed
Answer:
Explanation:
Research has shown that electric cars are better for the environment. They emit less greenhouse gases and air pollutants over their life than a petrol or diesel car. This is even after the production of the vehicle and the generation of the electricity required to fuel them is considered.
Answer:
A. It helped sailors steer around rocky coasts.
Explanation:
An astrolabe is an elaborate inclinometer. An inclinometer is an instrument used for angles of slope, elevation, or depression with respect to gravity's direction. It is also used as a tilt sensor, tilt indicator, slope meter, slope gauge.
<em>A. It helped sailors steer around rocky coasts.</em>
Rocky coasts are dangerous. In order to maneuver them, the sailors used an astrolabe. This helped them to understand the angles of slopes, elevation, depression of several rocks on sea.
<em>B. It aided navigators in predicting the weather.</em>
An astrolabe cannot predict the weather.
<em>C. It allowed sailors to know their north-south location.</em>
A compass is used for this purpose.
<em>D. It kept crews from getting sick.</em>
An astrolabe is not a medicinal equipment.
Answer:
The rotation of the earth
Explanation:
The rotation of the earth means that different sides of the earth are facing the sun at different times.This means that different parts are dark or bright, depending on night or day.
The tilt of the earth causes seasons, and the revolution of the earth creates years.
Answer:
The correct answers would be Much grassland has been converted to grow crops, The soil is rich in nutrients, and Many birds of the grasslands build their nests on the ground.
Explanation:
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