What is the main evidence for why the physical and ecological environment of the early Earth is thought to have been very hostile? Comparative embryological studies that show homologies in structure
Experimental results of similar conditions of early Earth
Fossil records of prokaryotic organisms showing similarities in formation
Genetic sequencing data for eukaryotes to show conserved processes

answer; ///i believe its: ///(embolus);

the correct answer is ( hypoglycemia ); good luck

explanation:

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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.