Answer:
4.5 billion years ago
Earth hasn't always been a blue and green oasis of life in an otherwise inhospitable solar system. During our planet's first 50 million years, around 4.5 billion years ago, its surface was a hellscape of magma oceans, bubbling and belching with heat from Earth's interior.
Explanation:
I have only heard a few phrases for spine
Backbone
Vertebrae (vertebral column)
Spinal column
The answer would be D.nucleus, prokaryotic cells don’t have a nucleus instead their dna floats around inside the cell
Answer:
A. Orogenic
Explanation:
orogeny tends to occur during a relatively short time in linear belts and results in intensive deformation.
In asexual reproduction, there is only 'one' parent
