WHICH STATEMENT IS TRUE?

AN ECOSYSTEM IS CLASSIFIED BY FACTORS SUCH AS TEMPERATURE AND PRECIPITATION
SOME BIOMES CAN BE TOO SMALL TO SEE WITHOUT A MICRISCOPE
BIOMES CONTAIN THOUSANDS OF ECOSYSTEMS AND PROVIDE EXOSYSTEM SERVICES
AN ECOSYSTEM CONSISTS OF LIVING THINGS THAT INTERACT IN THE SAME ENVIRONMENT

AN ECOSYSTEM CONSISTS OF LIVING THINGS THAT INTERACT IN THE SAME ENVIRONMENT.