The correct answer is -175 million years ago.
Pangaea was a supercontinent which was consisted of all the continental masses we know nowadays, just they were all merged into one very large land mass. This supercontinent started to form from the land masses that existed prior to it, and because of the tectonic activity they merged roughly around 335 million years ago. The continent existed during the Paleozoic era, as well as the early Mesozoic era. 
With the breaking up of this continent because of the tectonic activity, it split initially into two large continents, Laurasia on the north, and Gondwanaland on the south. With the later break up, Laurasia split into Eurasia and North America, while Gondwanaland split into South America, India (which later moved towards Eurasia and merged with it), Antarctica, and Australia. The formation of the modern day continents also resulted in the formation of multiple oceans instead of one.
 
        
             
        
        
        
It is a terrestrial planet.
It was formed from gas and dust.
It was formed in a debris disk from colliding planetesimals.
Explanation:
The earth is one of the four terrestrial planets that orbits the sun and forms a significant part of the solar system. 
The solar system is made up of the planets moving round the sun which is the star. The satellites moves round the planets. Also, there are other interplanetary bodies that moves in the solar system. 
- According to the solar nebular theory, the earth was formed from a gas of intersellar dust which was rotating. 
- Intense pressure and temperature led to the collapse of the core under gravitational pull. The core formed the sun. 
- The debris disk accreted to form several planetesimmals from which the earth was derived. 
- Most of the solid and denser materials were pulled in closely to sun and they are rock balls called terrestrial planets. 
- The outer parts are gas giants. 
learn more: 
lithosphere brainly.com/question/9582362
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The earth's distance from space is 0 because it is in space
 
        
                    
             
        
        
        
Answer:
(1) Less
Explanation:
Ice is less dense than water because the orientation of hydrogen bonds causes molecules to push farther apart, which lowers the density.
 
        
             
        
        
        
Answer:
Rome’s geography protected the city from invaders.
Rome’s central location made it a center for trade throughout the Mediterranean.
Rome’s lack of natural resources encouraged expansion.
Rome’s distance from Greece protected its culture from Greek influence.