Answer: Arctic Sea ice extent is virtually impossible to accurately measure from the Earth's surface. Scientists use radiometry data and visible imagery collected from the satellites to determine the sea ice extent.
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Answer:
d) 625 grey wolves
Explanation:
Number of grey wolves in yellowstone;
1997 = 100 wolves
2002 = 275 wolves
Between 1997 and 2002 (a five year period), number of wolves increased by; 275 - 100 = 175 wolves
Population growth rate between 1997 and 2002 = 175 wolves per 5 years
Note that the population growth continued at the same rate from 2002 to 2012 (a ten year period).
Therefore;
if; 5 years = 175 wolves
10 years = (175 × 10) / 5 =350 wolves.
therefore, number of wolves between 2002 and 2012 = 350 wolves.
Number of wolves as at 2002 = 275 wolves
total number of wolves at 2012 = 350 + 275 = 625 wolves
Answer:
Explanation:
It will increase because we as humans all have a carbon footprint and with more and more people populating the earth and nothing is done, more carbon will be made on the atmosphere and eventually global warming will heat the earth up so much that we won't be able to live on it anymore and all the ice will be melted away.
Also carbon footprints are from gas, using cars, planes, factories,etc.. anything that pollutes the air pretty much.
Boron and Calcium..........