Which example is a body fossil? shrimp burrow

dinosaur bone

dinosaur footprint

an ornithopod track

What is the mass of 0.46 mol of mgcl2

Which change to the system wood cause the freely-moving piston to lower?

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!