Question

Earth originated in the past
(A)4.6 billion years
(B)1.6 billion years
(C)7.6 billion years
(D)86 billion years

Answer 1

Hint: Earth is the planet that comes in third position from the Sun and the only astronomical objects known to harbor life. Regarding, twenty ninth part of earth’s surfaces consisting of continents and islands. The remaining seventy parts is covered with water, largely by oceans but also lakes, rivers and another freshwater that alone represents the hydrosphere.

Complete answer:
1.Earth’s outer layer is split into many rigid tectonic plates that migrate across the surface over several uncountable years.
2.Earth’s interior remains active with a solid iron inner core, a liquid outer core that generates earth’s force field and a convecting mantle that drives plate tectonic theory.
3.According to radiometric dating estimation and different proof, Earth formed over 4.5- 4.6 billion years past. Among the primary billion years of Earth’s history, life appeared within the oceans and began to affect Earth’s atmosphere and surface, resulting in the proliferation of anaerobic and, later, aerobic organisms. Some geologic proof indicates that life could have arisen as early as 4.1 billion years past.

Hence, the correct answer is option(A)

Note: Earth’s gravity interacts with different objects in the area, particularly the Sun and the Moon that is Earth’s only natural satellite. Earth orbits around the Sun in approximately 365.25 days. Earth’s axis of rotation is tipped with relevance to its plane, producing seasons on Earth. In the Solar System Earth is the densest planet and the biggest four rocky planets.