7.1.0. Gas Fees
Gas fees are blockchain charges for interacting with the blockchain. The gas fees are paid with the native crypto of that blockchain. Thus, for the Ethereum blockchain, you pay the gas fees in Ether while for the Binance blockchain, you pay in BNB.
It is worth knowing that as transactions increased on the Ethereum blockchain, its gas fees have skyrocketed in price. This is where the Binance blockchain has a huge advantage with its far cheaper gas fees as well as faster transaction speeds than the Ethereum blockchain.