Answer:
B
Explanation:
Heat moves from warm to cold so that means that C and D are eliminated. Conductors cause heat to move quickly thus melting the ice faster.
Convection keeps the earths surface warm
Prior to 1900, sea levels rose at maximum, 4 cm per year. Since 1900 sea levels have risen 11 cm per year.
<h3>How sea level is measured?</h3>
- Tide stations and satellite laser altimeters are the main tools used to measure sea level.
- The height of the sea as measured along the shore in relation to a particular place on land is what tide stations all around the world tell us about what is happening locally.
- NASA uses satellites to measure sea level all over the world.
- Height of the ocean's surface, often known as sea level, is measured by the Jason-3 satellite using radio waves and other equipment.
- It studies how the global sea level is changing over time for the entire Earth every 10 days.
- The average sea level is 6,371.001 km (3,958.756 mi), and it is 6,356.752 km (3,949.903 mi) at the poles.
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Answer:
b) By mixing weak base with its conjugate acid and then adjusting the pH with strong acid.
Explanation:
Hello,
In this case, considering that the buffer required a pH greater than 7 where the basic conditions are present, we need a weak base and its conjugate base in order to assure such pH greater than 7. Moreover, by using a strong acid, we can gently add it in order to decrease the pH up to 7.4 via a properly measured neutralization of the necessary moles of base up to a hydrogen concentration of 3.98x10⁻⁸ (pH). Therefore, answer is b) By mixing weak base with its conjugate acid and then adjusting the pH with strong acid.
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