#Blockchain
1ETH = 10^18 wei = 10^9gwei
more public testnet
in 2022, the ether merge inth beacon chain, and now it uses proof of stake instead of proof of work. this Merge reduce Etherium energy consumption by 99.95%
user that generate the transaction pays the gas fee
the gas from all transactions in a block will be recieved by the miner that validates the block. and all the other nodes in the etherium will run the transaction
you can see the gas fies consubed by the each operation on etherium https://www.evm.codes/
you need to give a good value for the gas, as the miner will select the good amount transaction to be mined.
there is a limit of transaction on the basis of gas price
so faster oeratin will likely charge high fee
most of the wallet set recommended gas price for you
any transaction has 2 variables, gasPrice and gasLimit