I need an current human caused disturbance to biodiversity subject so i can make an project with it in PowerPoint which means i need a topic to do a research about it and how did it impact biodiversity PLEASE

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.

the contamination

we are putting to many trash.

c. is the correct answer