EVERYDAY SCIENCE

Detailed explanation-1: -Chamberlin, a geologist, in collaboration with Forest Ray Moulton an astronomer, postulated a hypothesis known as ‘Planetesimal hypothesis’. According to this hypothesis, the planets originated form Planetesimals.

Detailed explanation-2: -The most accepted theory for the origin of life is Oparin-the Haldane theory. Reason for acceptance of this theory: This theory states that from the abiogenetic material organic molecules could be formed in the presence of an external energy source.

Detailed explanation-3: -Divine creation, evolution, spontaneous generation, and cosmogenesis are the four theories examined.

Detailed explanation-4: -In fact, we may distinguish five theories that Darwin combined: evolution as such, common descent, gradualism, multiplication of species, and natural selection.

Detailed explanation-5: -The Big Bang Theory is the most accepted theory regarding the origin of the planet earth and the existence of different life forms on it. According to this theory, the universe is a result of a massive explosion which occurred 20 billion years ago. Whether it is a hypothesis or a fact, a new universe was formed.