And make sure you're eating enough to fuel these forms of movement! (juliedillonrd.com)
The aim was to encourage the pupils to think about the process involved in designing, building and powering a vehicle, including the application of alternative fuel forms. (qaeducation.co.uk)
In both sequences, he found thin, discontinuous streaks of kerogen, a waxy precursor to fossil fuels formed from organic matter and commonly found in much younger shales that are known oil producers. (sciencemag.org)