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.
Once you're set up to receive money, the burden is on you as the recipient to cover the transaction costs. PayPal charges its business and premier account holders a per-transaction cost of 30 cents, plus 2.9 percent of the transaction amount. If the merchant has a higher sales volume within a month, that percentage could drop to as low as 1.9 percent.