The correct answer is B. 50ft
Explanation
This image is a contour line in which each line represents a cut of the terrain at a specific height, you can see that the first line has a number zero, the third line has a number 100ft and the sixth line has a number 200ft. Therefore, it can be stated that each line represents an ascent of 50 ft in height because the interval corresponds to 50 ft in height. So, line 1, 0 ft; line 2, 50 ft; line 3, 100 ft; line 4, 150 ft; line 5, 200 ft; and so on. So the correct answer is B. 50ft.
The highness or lowness of acidity in water soluble substances
In order to keep up with the tidal force of the moon, the tidal bulge waveform moves across earth's oceans at a speed of about 1,600 KM per hour.
The tidal bulge waveform is the distortion of water and Earth that we call a tidal bulge is a result of deformation of earth and water materials at different places on Earth and response to the combined gravitational effect of Moon and sun. It is two ocean bulges created on opposite sides of Earth due to the moon's gravitational pull and the ocean's resistance to the pull.
High and low tides are caused by the Moon. The Moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the Moon and the side farthest from the Moon. These bulges of water are high tides.
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