EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Today,the area of ice-covered land has reduced to ____ million square kilometers.
A
15.6
B
15.5
C
15.7
D
15.2
Explanation: 

Detailed explanation-1: -Sea level reached its current height about 8, 000 years ago and has fluctuated ever since. Today, glaciers cover approximately: 3% of Earth’s surface. 11% of Earth’s land area.

Detailed explanation-2: -The Antarctic ice sheet is the largest block of ice on Earth. It covers more than 14 million square kilometers (5.4 million square miles) and contains about 30 million cubic kilometers (7.2 million cubic miles) of water.

Detailed explanation-3: -September Arctic sea ice is now shrinking at a rate of 12.6% per decade, compared to its average extent during the period from 1981 to 2010. This graph shows the size of the Arctic sea ice each September since satellite observations started in 1979.

Detailed explanation-4: -Polar ice caps are melting as global warming causes climate change. We lose Arctic sea ice at a rate of almost 13% per decade, and over the past 30 years, the oldest and thickest ice in the Arctic has declined by a stunning 95%.

There is 1 question to complete.