II. Growth of lungs into the body cavity and development of the diaphragm. 1  lateral folding of the body wall encloses the foregut endoderm such that it is suspended within the intraembryonic coelom (or body cavity) by a sling of dorsal mesentery, which is mesoderm derived.
PayPal make money through following type of transactions. 1  2.9 to 3.9 % per transaction - each time a transaction happens on any website PayPal charges 2.9% for domestic transaction and 3.9% to international transaction. 2  3 to 5% on currency conversion charges - i.e. converting USD to INR or Converting USD to GBP etc.
Paypal built a system which â once your money is on their account, will avoid with everything they can for you to withdraw that money without paying significant additional fees. They tell you that they charge you eg. 3.5% if customers buy from you. Thats what you calculate for the cost of doing transactions with paypal.