Question

About how long ago was the earth formed?
(a) 4.6 billion years ago
(b) 10 billion years ago
(c) 3.0 billion years ago
(d) 20 billion years ago

Answer 1

the answer is about 4.6B years ago...

please do mark as brainliest

Answer 2

The earth was formed (a) 4. billion years ago

• Earth's roots date back about 4.6 billion years ago.  
• The explosion of cosmic material threw in space atoms of hydrogen and related nuclei that in turn condensed to formed nebulae.  
• Spinning split each nebula into many galaxies each of which by their shared gravitational force holds many stars together and one of these stars came from Earth.