Which radioactive isotopes did the curies discover?

polonium and radium
radium and carbon-14
carbon-14 and uranium
uranium and polonium

What do you mean there’s no jelly beans

It was crowded with sewer like smells. bad sewer systems

Answerthe global climate during the paleogene departed from the hot and humid conditions of the late mesozoic era and began a cooling and drying trend which dispite having been periodically disrupted by warm periods such as the paleocene-eocene thermal maximum, persists today;