Help me out on this chemistry question

Identify a specific example for each type of technology

Scientists often deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each of these numbers in an alternate form.

What percentage of energy used in the u. s is produced from fossil fuels