You are working at nasa studying new life forms found in the cueva de villa luz caves. you have collected an unknown specimen that appear to be 0.5 micron in size, have a cell membrane and ribosomes. this specimen could be…

A bacteria

Explanation:

Cueva de Villa Luz is a cave in Mexico famous for high concentrations of hydrogen sulfide and sulfuric acid in water.

Organisms living in this conditions should be adapted. The only known organisms capable of obtaining energy from hydrogen sulfide (lithotrophs) are prokaryote.

We are also told that the specimen collected appears to be 0.5 micron, which is in accordance with bacteria. It has a cell membrane and ribosomes, which they do have as well.

This specimen could be a lithotoph bacteria.

what school and grade?

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.