It has to be energy because there’s no internal emotion dealing with footprints. Foot prints are there to guide the investigator, energy can’t lead a investigator.
9.8 meters per second squared
This is the rate of acceleration of gravity on earth.
O movimento respiratório está enviando e permitindo que o oxigênio flua para cada parte (eu sou 100% certo, mas eu tenho quase certeza)