If 1 micron = 10,000 angstroms then 100 angstroms is what percent of 10 microns

0.001

Explanation:

new york state wildlife expert richard thomas found that a woodchuck could (and does) chuck around 35 cubic feet of dirt in the course of digging a burrow. thomas reasoned that if a woodchuck could chuck wood, he would chuck an amount equivalent to the weight of the dirt, or 700 pounds.