What is the original source of energy for gasoline?

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

Argon, neon, and xenon are examples of

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m