What was the rate at which the glacier's toe retreated (through melting/sublimation) between 1818 and 1882

Explanation:

The missing part of the question is shown in the diagram attached below:

From the image attached, we can see the Map of Rhone Valley glacier in Swiss Alps.

To determine the rate at which the glacier's toe retreated between 1818 & 1882;

Let start by determining the scale of the map

Using the scale of  1.5cm = 3000 feet

Then;

1 cm = 2000 feet

So, if the ice retreated 2.1cm;

Then to feet, we have:

2.1 cm * 2000 feet = 4200 feet

Hence, the required rate at which the glacier toe retreated is:

= 65.63 feet/year

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion

Yes, it’s awesome
: )