Explanation:
Fragment
A fragment is defined as a small part broken off or separated from something. A fragment can also be defined as a group of words that does not express the complete thought.
Examples of fragment - an example of fragment sentence is as follows -
"Shows no improvement in your efficiency"
In the above sentence , it is only a collection of words but there is not meaning .
Corrections 1:-"The evaluation shows that there is no improvement in your efficiency"
Correction 2:- " It will show no improvement in your efficiency if you don't work hard"
The fragment sentence given above can be corrected in two or many ways, as shown above. The sentence upon correction gives a complete sense and meaning.
The correct answer is - 2.1 cm per year.
In order to get to the result of how much the African plate has been moving annually over the last 100 million years, we should first turn the kilometers into centimeters:
1 m = 100 cm
1 km = 1,000 m
1,000 m = 100,000,000 cm
2,1 x 100,000,000 = 210,000,000 cm
We got to the result of 210 million cm of total movement. Now we have to divide the number of cm with the number of the years in which the plate has moved that much, which is 100 million:
210,000,000 / 100,000,000 = 2.1 cm
So we get a result of an average movement of 2.1 cm per year pf the African plate during the period of 100 million years.
Answer:
scale height = 19.80 km
Explanation:
given data
earth scale height = 8.6 km
atmospheric pressure = 10%
to find out
scale height
solution
we know that with the scale height we can find value of physical parameter that is change with height
and height is that value of pressure or density 
th of ground value
so we can say
= 10%
= 0.1
take log both side
t log(0.3678) = log 0.1
t = 2.3025
so
scale height for 10% is
scale height = 2.3025 × 8.6
scale height = 19.80 km
Gases and solids injected into the stratosphere circled the globe for three weeks. Volcanic eruptions of this magnitude can impact global climate, reducing the amount of solar radiation reaching the Earth's surface, lowering temperatures in the troposphere, and changing atmospheric circulation patterns.
