Many animals find themselves on multiple levels of the food chain. which of the following animals could be a primary, secondary, tertiary, or quaternary consumer based on its ecosystem?

bear
mouse
trout
zebra

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.

your answer is going to be physical weathering