Hi,
The first number "6" refers to the Fahrenheit degrees; so degrees.
Then, "100". That means that in 100 years, the temperature will rise for 100°F.
Also, the next number "100" refers to the past years.
Finally, "1" is also about degrees. The full sentence means that in the past 100 years, the temperature has risen only 1°F
Second part.
2050 --> the year when one million species will disappear
1.103 --> the number of species the British team studied
20 --> The % of the Earth's land area
14 million --> the number of species
37 --> the % of species who'll be destroyed
Hope i helped you. I didn't wrote everything, because you also have to understand the text and think by yourself.
