About 4.6 billion years ago, the solar system was nothing more than a cloud of gas and dust known as what? a. a solar universe b. a solar orion c. a solar accretion d. a solar nebula

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;