How does the change in shape help the worm move forward

Earthworms are adapted for life underground. Their streamlined shape allows them to burrow through soil. The earthworm withdraws the front setae and uses its rear setae to anchor itself at the back. The earthworm uses.

six grader is what i am ssorry

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.