The cookies that rose the highest were made from bread/cake/pastry fl our. The cookies that rose the highest spread more/less than the other cookies. This is probably because For those differences in...

The cookies that rose the highest were made from bread/cake/pastry fl our. The cookies that rose the highest spread more/less than the other cookies. This is probably because

For those differences in toughness that cannot be explained by the percent protein in the fl our, how can the differences be explained?