A sea scallop moves by shooting jets of water out of its shell. Explain how this works

Can you think of a way a rock unit with an older fossil could be above a rock until with a younger fossil? describe the scenario.

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?