EVERYDAY SCIENCE

Detailed explanation-1: -Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. Volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen.

Detailed explanation-2: -Earth sciences are the fields of study concerned with the solid Earth, its waters, and the air that envelops it. They include the geologic, hydrologic, and atmospheric sciences with the broad aim of understanding Earth’s present features and past evolution and using this knowledge to benefit humankind.

Detailed explanation-3: -Geology is the study of the origin, history, and structure of Earth. It also includes the study of the processes that shape Earth. A scientist who studies geology is called a geologist. In most cases, a geologist studies one specific part of the Earth.

Detailed explanation-4: -Earth will always be the most accessible habitable planet for study. Consequently, studying the origin and earliest evolution of life, along with the long-term evolution of the Earth’s environments, helps us understand why the Earth became habitable and why terrestrial life has persisted for billions of years.