If several species of carnivores and removed from an ecosystem, the most likely effect on the ecosystem will be

A decrease in stability among populations

Explanation: if several species of carnivores are taken away from an ecosystem, there will be an instability among populations. Some of the factors that might cause the decrease in stability are that there would be an over population of the prey animal that would not be eaten by the carnivores and that the plant life would be in danger because of the over population of hervibores.

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.